The 19th National Congress of the Communist Party of China clearly made an important judgment that "Socialism with Chinese characteristics has entered a new era", and made a new summary of the changes in the main social contradictions in our country in the new era-"The main social contradictions in our country have been transformed into the contradictions between the people’s growing needs for a better life and the unbalanced development". This is our party’s new summary of the main social contradictions in Socialism with Chinese characteristics in the new era according to the changes of the times and national conditions. At the same time, it also emphasizes that the basic national conditions that China is still in the primary stage of socialism for a long time have not changed, and China’s international status as the largest developing country in the world has not changed. The whole party should firmly grasp the basic national conditions of the primary stage of socialism and firmly base itself on the greatest reality of the primary stage of socialism.

The Communist Party of China (CPC)’s understanding of the main social contradictions in our country is gradually deepened and continuously developed with the different historical periods and stages of social development in our country. The Party’s correct understanding and grasp of the main social contradictions in China is an important prerequisite for our Party to scientifically judge the national situation and correctly formulate major policies, and it is of great theoretical and practical significance for leading the whole Party and the people of the whole country to promote the development of China’s revolution, construction and reform.

1. The party’s understanding of the main social contradictions during the new-democratic revolution.

After the founding of the Communist Party of China (CPC), China society faced various complicated social contradictions. Since the Opium War, China began to fall into a dark situation of internal troubles and foreign invasion. The imperialist countries carved up their spheres of influence in China, and the feudal landlord class cruelly oppressed the peasants. The bourgeoisie colluded with imperialism, and at the same time, they were intertwined with the feudal landlord class to jointly oppress the working masses, and the mountains and rivers were broken, making the people miserable. In this grim situation, how to correctly understand and grasp the main social contradictions in China and formulate practical policies and measures accordingly? Guided by Marxism, the Communist Party of China (CPC) made a profound understanding and summary of China’s national conditions, especially the main social contradictions. After a long period of exploration, the Communist Party of China (CPC) people, represented by Comrade Mao Zedong, came to the conclusion: "The contradiction between imperialism and the Chinese nation, feudalism and the masses of the people are the main contradictions in modern China society." "The contradiction between imperialism and the Chinese nation is the most important contradiction among all kinds of contradictions." It was based on a correct understanding of the principal contradictions at that time that our Party scientifically formulated the line, principles and policies of the new-democratic revolution in different periods, United and led the people of the whole country through arduous and unremitting struggle, and finally overthrew the three mountains that were pressing on the people of China and won the great victory of the new-democratic revolution.

2. The Party’s understanding of the main social contradictions during the period of socialist transformation and construction.

After the founding of New China, what are the main contradictions in our society? The earliest summary of the main social contradictions in China after the founding of New China was the enlarged meeting of the Political Bureau of the Central Committee held by the CPC Central Committee in Xibaipo from September 8 to 13, 1948, namely the "September Meeting" in the Political Bureau of the Central Committee. In an important speech delivered at this meeting, Mao Zedong pointed out: "After the bourgeois democratic revolution is completed, the main contradiction within China is the contradiction between the proletariat and the bourgeoisie, and the external contradiction is the contradiction with imperialism." Liu Shaoqi also pointed out at this meeting: "In the new democratic economy, the basic contradiction is the contradiction between capitalism (capitalists and rich peasants) and socialism. After the victory of the anti-imperialist and anti-feudal revolution, this is the main contradiction in the new society. " He particularly emphasized: "We should clearly see this contradiction. This struggle between the proletariat and the bourgeoisie is a struggle between socialism and capitalism. " This is the first time that the leaders of our party discussed the main social contradictions in China after the founding of New China.

In the early days of the founding of New China, there were many economic sectors in China. "At that time, the main contradiction in rural areas was the contradiction between feudalism and democracy, not the contradiction between capitalism and socialism, so it took two to three years to implement land reform in rural areas." "After the victory of the new-democratic revolution and the completion of the land system reform in the whole country, the main domestic contradictions have turned into contradictions between the working class and the bourgeoisie, and between the socialist road and the capitalist road." On this basis, our party has formulated the general line of "transition period", that is, to gradually realize the socialist industrialization of the country and the socialist transformation of agriculture, rival industries and capitalist industry and commerce in a fairly long period of time. This task was basically completed by the end of 1956.

With the successful completion of socialist transformation, China society has realized the transformation from a new democratic society to a socialist society. From September 15th to 27th, 1956, the Eighth National Congress of communist party was held in Beijing. The Eighth National Congress of the Communist Party of China correctly analyzed the changes of class relations and major domestic contradictions in China after the socialist transformation was basically completed, and clearly pointed out that after the socialist transformation was basically completed in China, "the major domestic contradiction is already the contradiction between the people’s demand for establishing an advanced industrial country and the reality of a backward agricultural country, and the contradiction between the people’s need for rapid economic and cultural development and the current situation that economic and cultural cannot meet the people’s needs." The essence of this contradiction is the contradiction between the advanced socialist system and the backward social production when the socialist system in China has been established. The solution to this contradiction is to develop social productive forces and implement large-scale economic construction. For the first time, the Eighth National Congress of the Communist Party of China systematically summarized the main social contradictions in China during the period of socialist construction.

On February 27th, 1957, Mao Zedong delivered an important speech on Correctly Handling Contradictions among the People at the 11th (enlarged) meeting of the Supreme State Council, which was revised and supplemented and published in People’s Daily on June 19th of that year. In this important speech, Mao Zedong systematically discussed the Marxist theory of contradiction, pointing out that the basic contradiction in socialist society is still the contradiction between productive forces and relations of production, economic base and superstructure. At the same time, there are two different kinds of social contradictions in socialist society, namely, the contradiction between ourselves and the enemy and the contradictions among the people, which are completely different in nature. The former is antagonistic in nature, so it is necessary to adopt compulsory and dictatorship methods to solve it, while the latter is non-antagonistic, so it can only be democratic and educational. Mao Zedong also proposed that correctly handling contradictions among the people should be the theme of the country’s political life. Generally speaking, our party’s understanding of the main social contradictions in this period is correct and realistic. Later, due to some "Left" tendencies in the Party, the Party’s understanding of the main social contradictions was biased. On October 9, 1957, the Third Plenary Session of the Eighth Central Committee of the Communist Party of China put forward the conclusion that "the contradiction between the proletariat and the bourgeoisie, the contradiction between the socialist road and the capitalist road" is the main contradiction in our society at present; The second meeting of the Eighth National Congress of the Communist Party of China held in May 1958 proposed that before the socialist society was built, the struggle between the proletariat and the bourgeoisie, the struggle between the socialist road and the capitalist road,It has always been the main contradiction within our country. The party’s mistakes in understanding the main contradictions in the socialist period led to a series of major policy and decision-making mistakes of our party and state.

3. The Party’s understanding of major social contradictions during the period of reform, opening up and socialist modernization.

The Third Plenary Session of the Eleventh Central Committee of the Communist Party of China held in 1978 opened a new era of China’s reform, opening up and socialist modernization. On March 30, 1979, at the retreat of the Party’s theoretical work, Deng Xiaoping, the chief architect of reform and opening up, made an important exposition on the basic contradictions and main contradictions in socialist society. He pointed out: "The basic contradictions are still the contradictions between the relations of production and productivity, and the contradictions between the superstructure and the economic base." "As for what is the main contradiction at present, that is, the main problems or central tasks that the whole Party and the people must solve at present, because the Third Plenary Session decided to shift the focus of work to socialist modernization. Our productivity development level is very low, which is far from meeting the needs of the people and the country. This is the main contradiction in our current period, and solving this main contradiction is our central task. "

It is on the basis of the above explanation that the Resolution on Several Historical Issues of the Party since the Founding of the People’s Republic of China, adopted at the Sixth Plenary Session of the Eleventh Central Committee of the Party on June 27th, 1981, fully affirmed the formulation of the Party’s Eighth Congress and further streamlined and refined it: "The main contradiction to be solved in China is the contradiction between the people’s growing material and cultural needs and backward social production. The focus of the work of the party and the state must shift to socialist modernization centered on economic construction, greatly develop social productive forces, and gradually improve people’s material and cultural life on this basis. " This generalization has become an important basis for the party to formulate various lines, principles and policies in the process of reform, opening up and socialist modernization.

4. Socialism with Chinese characteristics entered a new era, the party’s understanding of the main social contradictions.

After long-term efforts, Socialism with Chinese characteristics has entered a new era, which is a new historical orientation for China’s development. Socialism with Chinese characteristics’s entry into a new era indicates that the principal contradiction in our society has also undergone new changes. The 19th National Congress of the Communist Party of China made a new summary of the main social contradictions in China in the new era of Socialism with Chinese characteristics. General Secretary of the Supreme Leader pointed out in the report of the 19th National Congress: "Socialism with Chinese characteristics has entered a new era, and the main contradiction in our society has been transformed into the contradiction between the people’s growing need for a better life and the unbalanced development." The report of the 19th National Congress of the Communist Party of China also summarized the reasons for the changes in the main social contradictions in our country: China has stably solved the problem of food and clothing for more than one billion people, achieved a well-off society on the whole, and will soon build a well-off society in an all-round way. People’s needs for a better life are increasingly extensive, which not only puts forward higher requirements for material and cultural life, but also demands for democracy, rule of law, fairness, justice, security and environment are increasing day by day. At the same time, the level of China’s social productive forces has improved significantly on the whole, and the social productive capacity has entered the forefront of the world in many aspects. The more prominent problem is the insufficient development imbalance, which has become the main constraint to meet the people’s growing needs for a better life.

The major social contradiction change in our country is a historic change related to the overall situation of Socialism with Chinese characteristics’s construction. This change requires us to focus on solving the problem of unbalanced and insufficient development on the basis of continuing to promote development and better meet the people’s growing needs in economy, politics, culture, society and ecology. Of course, at the same time, we must also see that the changes in the main contradictions in our society have not changed our judgment on the historical stage of socialism in China, the basic national conditions that China is still in the primary stage of socialism and its international status as the largest developing country in the world has not changed.

In a word, the Communist Party of China (CPC)’s understanding of the principal social contradictions in our country keeps pace with the times with the development of the times and the specific changes of China’s national conditions. The process of deepening the Party’s understanding of the principal social contradictions in our country marks that our Party’s understanding of the laws governing the development of human society and socialist construction has reached a new level, which is the new development of Marxist theory of contradictions and the new development of Marxism in China.

(Author: Han Zhenfeng, Dean of the School of Marxism of Beijing Jiaotong University, and researcher of Socialism with Chinese characteristics Thought Research Center of Beijing Supreme Leader in New Era; This article is the result of the special task of the Ministry of Education to study and explain the spirit of the 19th National Congress of the Communist Party of China)

　　"Tangshan released" WeChat official account news, and the main activity tracks of one confirmed case and 34 asymptomatic infected people in Tangshan were released:

　　One confirmed case.

　　The 15th case now lives in Fengrun District. Recent main activity tracks: Qianjiazhuang Village in Fengrun Yinpu Township, Fuhui Supermarket, Kaiping Qixing Kindergarten, Sichao Hairdressing Hall, Shunda Advertising Company, Supply and Marketing Gas Station, etc.

　　34 cases of asymptomatic infection

　　The 46th case lives in lunan district. Recent main activity tracks: Lunan Shuangxinlou Community, No.9 Middle School, Shuangxinlou Likun Convenience Store, Lubei Fenghuang New Town Tangshan Bank, Gaoxin Qingfeng Gas Station, Qingke Park, Yijiubawu Fast Food Restaurant, Shidai, Shenghua Market, etc.

　　The 47th case lives in lunan district. Recent main activity tracks: Lunan Paradise Community, colorful small dining table, Nanxin Road Tangcheng Supermarket, Lubei Ailawu Baking Workshop, Letaicheng Community, Junrui Market, etc.

　　The 48th case lives in lunan district. Recent main activity tracks: Zhangdingzhuang Village in Lunan, Gaoxin Shenghua Market, etc.

　　The 49th case lives in lunan district. Recent main activity tracks: Lunan Xinhua Building Community, Luancheng Building Community, Renheng Hubin City Community, Hehong Sunshine Community, Lubei Jinyu Lanwan Community, Jingtai Hanlin Community, Gaoxin Shenghua Market.

　　The 50th case lives in lunan district. Recent main activity tracks: Lunan National Defense Building Community, Xixin Community Health Service Station, Gaoxin Shenghua Market, etc.

　　The 51st case lives in lunan district. Recent main activity tracks: Lunan Xidafutuo Village, Zhonghong Fresh Chicken Refrigeration Factory (near Tangbai Road), etc.

　　The 52nd case lives in lunan district. The main activity tracks in the near future: National Defense Building in Zhaozhuang Community of Lunan, Rookie Station in Zhaozhuang Community, Zhaozhuang Morning Market, Bohai Haoting Community, Shuguang Building Community in Lubei, Shuguang Building Community Dental Clinic, Zhenhua Shopping Center, Bafang Shopping Center Supermarket, etc.

　　The 53rd case lives in lunan district. Recent main activity tracks: Lunan Nanhu Jindi Community, Gaoxin Shenghua Market, etc.

　　The 54th case lives in lubei district. The main activity tracks in the near future: Wandu International Community in Hancheng Town, North Road, Sunshine Supermarket in Hancheng, Likang Hospital, Affiliated Hospital of North China University of Science and Technology, Tripping Hotel, "Childlike Heart" Kindergarten, the third branch of Fengrun Vehicle Management Office, Gaoxin Shenghua Market, etc.

　　The 55th case lives in lubei district. Recent main activity tracks: Rainbow Garden Community on the left bank of Hancheng Town, North Road, Superman Image, Dingsheng Food Supermarket, Wang Ramen Restaurant, Leshuntang Pharmacy, Yimiliu Snack Shop, Suixiangcang Supermarket, Yangcheng Xiaozhu Restaurant, Zhongwu Taekwondo Hall in Hugezhuang Town, Luannan, Fengrun DFK Street Dance, Gaoxin Shenghua Market, etc.

　　The 56th case lives in lubei district. The main activity tracks in the near future: Rainbow Garden Community in Hancheng Town, Lubei, child prodigy art kindergarten, Superman Image, Yangcheng Xiaozhu Restaurant, Fengrun Beigou Shopping Mall, etc.

　　The 57th case lives in lubei district. Recent main activity tracks: Longquan Xili Community in Lubei, Gaoxin Shenghua Market, Longwangmiao Market, etc.

　　The 58th case lives in lubei district. Recent main activity tracks: Yuhua Jiayuan Community in Lubei, High-tech Shengshi Garden Hotel, Hanlin Xinyuan Community in Luannan, Tangbai Supermarket (Luannan), etc.

　　The 59th case lives in lubei district. Recent main activity tracks: Lubei Lugang Community, Phoenix Garden Roast Duck Restaurant (Xinhua Road Store), Gaoxin Shenghua Market, Sanhe Beef Flat Restaurant (the intersection of Daqing Dongdao and Torch Road), etc.

　　The 60th case now lives in high-tech zone. Recent main activity tracks: Gaoxin Dangjiazhuang Village, Shenghua Market and Niangniangmiao Village Daokou Rookie Station.

　　The 61st case now lives in the High-tech Zone. Recent main activity tracks: Gaoxin Dangjiazhuang Village, Shenghua Market, Lunan Baodao Hospital, Dadiantou Village, Duancun Town, Anxin County, Baoding City, Anxin County Hospital, etc.

　　The 62nd case now lives in the High-tech Zone. Recent main activity tracks: high-tech Waguanzhuang Village, Niangniangmiao Village Happy Supermarket, Shenghua Market, Lubei Wuyue Plaza Supermarket, etc.

　　The 63rd case now lives in high-tech zone. Recent main activity tracks: Gaoxin Shenghua Apartment, Shenghua Market, Xi ‘an Gezhuang Village in Angezhuang Town, Luanzhou, Shengli Road Vegetable Market, etc.

　　The 64th case now lives in the High-tech Zone. Recent main activity tracks: Jiqingli Community, Shenghua Market, etc.

　　The 65th case now lives in the High-tech Zone. Recent main activity tracks: High-tech Jiqingli Community, Shenghua Market, Qingcui Tangtou Health Club, Luanzhou Wolong Mountain Villa Community, Dahengshanying Village, Luanhe Hotel, etc.

　　The 66th case now lives in Fengrun District. Recent main activity tracks: Fengrun Rengezhuang Village, Xiehe Hospital, Gaoxin Shenghua Market, etc.

　　The 67th case now lives in Fengrun District. Recent main activity tracks: Fengrun Rengezhuang Village, Jizhentun Village, Zhiwei Supermarket, Huarong Belt Steel Factory, Yuanfuda Supermarket, Rengezhuang Town Health Center, Yingchun Pharmacy, Lunan Union Medical College Hospital, Fengnan Zhongmao Team, Shengyi Logistics, Zhongda Logistics, Tianjin Daqiuzhuang Youfa Steel Pipe Factory, Tianjin Haihong Metal Company, etc.

　　The 68th case now lives in Fengrun District. Recent main activity tracks: Zuojiawu Village, Zuojiawu Town, Kaier Shangcheng Community, etc.

　　The 69th case now lives in Fengrun District. Recent main activity tracks: Qiaogezhuang Village in Rengezhuang Town, Rengezhuang Central Primary School and so on.

　　The 70th case now lives in Kaiping District. Recent main activity tracks: Puyuan Community in Xincheng, Kaiping Ancient Town, Shijiazhuang Village, Kaiping Town, Shangyu Restaurant, Kaiping Park, Quzhuang Collection, No.6 Collection, Kaiping Collection, Phoenix Flower Market, Gaoxin Shenghua Market, Xuyi Subset, Lunan Xu Anyuan Community, etc.

　　The 71st case now lives in Kaiping District. Recent main activity tracks: Yeli Village, Shuangqiao Town, Kaiping, Gaoxin Shenghua Market, etc.

　　The 72nd case lives in guye district. Recent main activity tracks: Dazhuangtuo Village, Dazhuangtuo Market, etc.

　　The 73rd case lives in guye district. The main activity track in the near future: Guye refractory building community, etc.

　　The 74th case lives in guye district. Recent main activity tracks: Xinguang Building in Xincun, Dazhuangtuo Village, etc.

　　The 75th case lives in guye district. Recent main activity tracks: Dazhuangtuo Village in Guye, Kaishen Digital Cinema, Lanting Huafu Community, Dazhuangtuo Changle Bathroom, Linxi Mall, Jing Yue Lanwan, the first floor lobby of guye district Social Security Bureau, Lunan wanda plaza, south lake hospital, Nanfang Lighting City, Lubei Tangshan Department Store, Louvre Hotel (near the department store), Yuanyang City, Aegean Sea, Fengrun Board City, Kaiping Red Star Macalline Sanshu Paint Store, etc.

　　The 76th case lives in guye district. Recent main activity tracks: Tangjiazhuang Street Railway Workshop, Second Experimental Primary School, Fanghua Dance Class, Zhenxing Road Market Hall, etc.

　　The 77th case lives in Luanzhou City. Recent major activity tracks: guo zhuang cun, Luanzhou, Gujiazhuang Village, Xingguo Iron and Steel, Changli County, Qinhuangdao City, etc.

　　The 78th case now lives in Luanzhou City. Recent main activity tracks: Luanzhou Ancient City Office guo zhuang cun, Yanshan Shopping Mall, Laozhan Village Lottery Station, Dongliugezhuang Village, Guo Zhuang Village Head Barbecue Shop, etc.

　　The 79th case lives in yutian county. Recent main activity tracks: Wulipu Village, Fanjiazhuang Daji, Xiaodingdu Daji, Hanjialin Daji, Liangjiadian Village Daji, Xiaogang Village Daji, Liangjiadian Town Jiaxing Supermarket, Tongyu Supermarket, Manulife Supermarket, Hongsheng Supermarket and Gaoxin Shenghua Market.

On April 30th, Ma Jiangming took off his protective clothing and rested in the safe passage of a shopping mall in Pudong New Area. Zhongqingbao Zhongqingwang reporter Yan Xueqing/photo

According to the WeChat news of Freezing Point Weekly, on April 28th, 17 "Epidemic Prevention Dabai" in Shanghai were forced to leave Dejinyuan Community in Pudong New Area after receiving wages and subsidies that had been owed for nearly one month. That night, the rain cooled in Shanghai, and they slept under a bridge in a nearby park.

"Epidemic Prevention" is their standard title on the local official attendance sheet. For more than a month, they didn’t know how to define their identity. Nominally, they are called "volunteers" by residents and residents’ committee staff. In fact, they are "migrant workers" in the prevention and control of COVID-19 epidemic in Shanghai, and they are recruited as "epidemic prevention security guards" through security companies and intermediaries.

A number of security guards reported to the reporter of China Youth Daily and China Youth Network that they had encountered problems such as "deceptive recruitment", loss of team leader, and arrears of salary subsidies.

be cheated

More than 10 interviewed players thought they were cheated to Dejinyuan Community.

Zhang lei used to work in Baoshan District, Shanghai. After the outbreak of the epidemic, the factory stopped working. He saw an intermediary named "Yang" posting job information in the recruitment group.

The recruitment information requires that there must be a nucleic acid certificate within 48 hours, and the site management arrangement must be obeyed, so that the community can be unsealed. The conditions are: 250 yuan/day, 12-hour accommodation, and salary settlement. The work address only says "Community near Beicai Town, Pudong New Area".

Zhang lei said that the working hours promised by the intermediary at that time were 3 to 15 days.

Similar recruitment information appeared in large numbers after the outbreak. The reporter saw in a number of Shanghai recruitment groups and odd jobs that in late April, the recruitment information was still maintained at dozens of posts every day, mostly involving epidemic situations: epidemic prevention and security, cleaning, killing team members, volunteers for epidemic control, group buying WeChat group business promoters, and secret transfer security guards.

The so-called "inner perimeter" refers to working in the sealed control area. Zhang lei called specifically to ask whether there were positive infected people in the work area. The other party said that "there is no positive, only secret connection" and asked him for his name and mobile phone number to complete the registration.

Zhang lei bluntly said that he cares about whether there are positive people because they can’t stand the lost working hours after isolation.

"We are migrant workers, and we really came out to work during the epidemic to make money." Zhang lei said that they work in the factory, and the nature of their work is odd jobs. They rarely sign full-time contracts, and they are basically converted into "hourly jobs" through labor agencies, which means that once they stop working, they have no income.

"But the mortgage in our hometown has not stopped, and the elderly and children are waiting to raise, and there are many expenses." Zhang lei said that they can’t be idle.

Ma Jiangming is also concerned about whether there are positive infected people in the workplace when applying for the job. In February of this year, he just came to Shanghai from other places to work, and he heard that Beicai had rushed over to recruit workers.

On March 22nd, Zhang lei and other five people arrived at their residence-Chen Qiao Neighborhood Committee of Beicai Town in Dejinyuan Community. At this time, they learned that Dejinyuan had positive infections in mid-March, and some of them had not yet been transported.

At this point, they can’t actually leave, either wear protective clothing to work or stay in the closed control area. "There must be a door to go out of the community, even if it is out of the community, how to leave Pudong is also a problem."

After the intermediary sent them to the door of the community, they disappeared and the group chat was dissolved. Until now, Zhang lei didn’t know the real name of "Yang", only remembered that the other party was a "young man" and a mobile phone number belonging to Shanghai.

By the end of March, a total of 22 people had stayed in Dejinyuan Community, becoming "the white of internal insurance and epidemic prevention". They live in an activity room on the second floor of Chen Qiao residents’ committee. There is only one spring bed, and the other 21 people play on the floor.

The residence of Dejinyuan "Epidemic Prevention Dabai" in Chen Qiao Neighborhood Committee. Photo courtesy of respondents

Their task in Dejinyuan is to maintain the order of the positive building and nucleic acid detection in the community, dissuade residents who try to get out of the building, and send safeguard materials to the door of the positive infected person.

In the first two weeks, they have to deal with the diverse needs of residents in the community. In the eyes of residents, they are not ordinary migrant workers. "Those of us who wear protective clothing are the nearest epidemic prevention workers".

"At that time, the residents of the community were also very difficult. In addition to making money, everyone wanted to help the trapped residents do something." Team member Zhang Changshun told reporters that he was one of the first people who came to support the community on March 18th. He used to be a security guard in a nearby community and was temporarily transferred to Dejinyuan.

go missing

The salary first went wrong in early April.

The salary of more than 200 yuan for 12 hours is not high in Shanghai. Zhang Changshun said that his original security salary was more than 200 yuan a day, but it was higher than usual to be able to work "even shifts" during the epidemic.

"Working overtime" means going to work day and night. For example, the reporter saw that a recruitment information directly stated that "working overtime" was allowed, 12 hours /200 yuan, 24 hours/400 yuan and 48 hours/800 yuan.

Zhang Changshun, Ma Jiangming and others just arrived, which is called "Lian Ban". Stay on duty for 12 hours in front of the building, with a daily salary of 240-260 yuan; 24 hours on the job, double it. In the early days, two people were in charge of a building, and they could take turns to rest when they were not busy at night.

The form of "continuous shift" lasted for about a week and was cancelled. It was changed to 12 hours a day and 6 hours overtime.

On April 5th in Dejinyuan, the column of overtime hours was changed from 12 hours to 6 hours. The daily attendance sheet is stamped with the official seal of Chen Qiao Resident Committee of Beicai Town, Pudong New Area.

Attendance sheet for epidemic prevention in Dejinyuan, Yishen Security, Shanghai. Photo courtesy of respondents

"This is equivalent to reducing salary in disguise." Zhang lei said that with the outbreak of the epidemic, the number of positive buildings in the community increased. In the later period, there were 14 buildings with positive infections, and there were insufficient manpower. One person looked at two buildings. "The treatment has declined and the workload has increased."

The intermediary promised to pay wages within 15 days. Originally, their attendance and wages were the responsibility of the team leader Chen Yiwei. After Chen Yiwei delayed the issuance many times, on April 26, he suddenly lost contact.

After the news came out, some residents of Dejinyuan were worried.

As the epidemic prevention security guards went to defend their rights, the building was unattended. A resident saw his neighbor living in the closed building go out of his house, worried that the epidemic prevention achievements would be "destroyed once and there was no hope of unsealing", and called on everyone to contribute to solving the wage arrears problem of "epidemic prevention" in the community WeChat group.

"Chen Yiwei’s running must have been thought out early and premeditated." Zhang Changshun said that on April 19th, Chen Yiwei borrowed 1000 yuan money from him, saying that he needed money.

Chen Yiwei is the "biggest spender" in the team. His money is mainly used for "dumping materials" in Dejinyuan.

A number of team members said that Chen Yiwei got milk, coke, sprite, cigarettes, alcohol and other materials, and then sold them to residents and team members at high prices. This kind of materials once belonged to "rare goods" in the closed control area.

Many residents who bought materials from Chen Yiwei kept transfer records. Some residents told reporters that a bottle of alcohol with a market price of more than 40 yuan would cost more than 200 yuan from Chen Yiwei. A daily price of 110 yuan cigarettes, from Chen Yiwei’s hand to increase the price of 100 yuan.

On April 24th, the number of times that Chen Yiwei borrowed money reached a peak, and he kept borrowing money from the team members and some residents of Dejinyuan Community. According to incomplete statistics, nearly 10 players borrowed more than 9000 yuan from Chen Yiwei. The number of loans borrowed by residents is unknown.

Chen Yiwei once borrowed a battery car from Wei, a resident of the community. A team member said that he saw Chen Yiwei "running away by bike". At the same time, Chen Yiwei took away 21 players with a total living expenses of 21,000 yuan.

Since April 26, the team members have repeatedly called Chen Yiwei’s mobile phone number and WeChat, but they can’t get through. Before the press release, the reporter dialed Chen Yiwei’s mobile phone number, and the other party showed that it was turned off.

ask for help

After learning about it, some residents of Dejinyuan also spontaneously called and posted online posts for help and rights protection.

On April 27th, Zhang lei was called to the door by three strangers, who told him to stop making trouble.

Zhang lei and other team members called 12345, 12333, 12348 and other hotlines to report and reported to the police.

After the intervention of Beicai Town Government, two staff members who claimed to be Shanghai Yishen Security Company came to negotiate with them to pay the arrears of wages. One is called Dang Man Min, and the other is Zhuo.

Party Manchu paid 21 epidemic prevention security guards the salary and overtime allowance before April 26th, calculated as 18 hours per day, and asked them to remain on duty.

The players were divided into several groups and received wages and subsidies from the party and the people. Photo courtesy of respondents

They are worried about future problems and hope to sign a written employment agreement. On the evening of April 28th, a new captain came to the community, saying that new personnel would join in and asked the original epidemic prevention security guards to make room. In the end, 17 members including Ma Jiangming left Dejinyuan Community in the rain.

On May 1st, a person in charge of the Chen Qiao neighborhood committee in Beicai Town told the reporter of Zhongqingbao. com that the problems reflected by the "Great White Epidemic Prevention" had been solved, and 17 people left for "transferring posts" and "changing to other communities".

He said that it is not clear whether these "big whites" come from intermediary companies or security companies. "They are all operated from above and have nothing to do with the Jucun Committee." They are only responsible for the reception of personnel after they come in. "Other things don’t matter."

The relevant departments of Shanghai told the reporter of Zhongqing Daily and Zhongqing.com that Pudong New Area has been involved in handling this matter. The reporter asked the relevant departments of Pudong New Area, Beicai Town and Shanghai Yishen Security Company about the situation. As of press time, no response was received.

Zhang lei and others denied "post adjustment".

They can’t rest under the bridge in the park any longer. On April 29, the city management unit inspected. "I heard that someone reported us." Ma Jiang said.

Four of them found a hotel, "beds, 40 to 50 yuan per person a day". The rest are going to stay under the bridge for two days.

Ma Jiang said that it has been raining for many days in Shanghai, and it is difficult to find places where no one lives, such as bridge opening, corridors and underground garages, and so on, until you find a job.

On the evening of 29th, Zhang lei told the reporter a "good news"-he and three workmates "came out of Pudong New Area". They found a taxi with a pass through the introduction of friends with channels. From Beicai Town to Baoshan District, the whole journey is about 38 kilometers, and each person is in 300 yuan. Four people paid the driver a total of 1200 yuan.

Ma Jiangming found a new job through an intermediary. "I still do epidemic prevention and help doctors who do nucleic acid testing’ label’. "He repeatedly confirmed the information to the intermediary, and the intermediary made a guarantee," 400 yuan can have a normal rest one day and at night ".

They walked 3 kilometers to the work place and found that there was no doctor there, only an isolation point under construction. "Let’s build a shed and be cheated again."

That night, they found an underground garage in a shopping mall and planned to spend the night there. When they went inside, they found that it was occupied. There is no one on the second and third floors of the safe passage, where they make a floor and temporarily settle down.

(At the request of the respondents, Zhang lei, Ma Jiangming and Zhang Changshun are all pseudonyms.)

Original title: 17 epidemic prevention security guards in Shanghai were cheated, and now they spend the night under the bridge and in the corridor.

[Disclaimer] Manuscripts not marked with "Source: Upstream News" or "Upstream News LOGO, Watermark Text, Pictures, Audio and Video" on the upstream news client are all reposted. If the reposted manuscript involves copyright issues, pleaseContact upstream.

　　Recently, the regulation of the property market in hot cities has been tightened, and real estate financing has also been strongly regulated. A number of bankers said that in the second half of the year, they will strictly and prudently manage loans in the real estate sector and control development loans and mortgage loans in accordance with the requirements of the regulatory authorities. In the future, there is little room for further improvement in the proportion of real estate in financial resources. At the same time, the credit policy will be adjusted and optimized around the regulatory requirements, and the support for the real economy will be increased.

　　Some areas raised mortgage interest rates.

　　According to the monitoring data of Rong 360 Big Data Research Institute, from the end of July to the beginning of August, the mortgage interest rates in Suzhou, Hangzhou, Dalian and Ningbo all increased.

　　Li Wanbin, an analyst at Rong 360 Big Data Research Institute, said that the increase in mortgage interest rates was due to overheating of the property market in some cities, and local governments adjusted by raising mortgage interest rates. In addition, the bank’s credit funds in the second half of the year are often not as abundant as those in the first half of the year, and the mortgage amount is also relatively tight. Under this circumstance, the bank will also choose to raise the mortgage interest rate.

　　"It is expected that more regions will raise the mortgage interest rate, and the amount will be relatively tight, but it does not rule out that some banks in some regions will lower the mortgage interest rate from the bank’s own funds and business strategies." Li Wanbin said.

　　According to the statistics of the Central Plains Real Estate Research Center, at present, the mortgage interest rates in various places are basically stable, with few obvious fluctuations, and most banks are still lending normally. Judging from the major first-and second-tier cities in China, the current interest rate level fluctuates slightly compared with the second quarter, but most cities still maintain the lowest interest rate in the past two years.

　　Wang Yifeng, chief analyst of Everbright Securities Banking, said that housing mortgage loans have grown rapidly since this year. Under the background of stable housing prices, stable expectations and city-specific policies, real estate policies in various cities have maintained pressure, and mortgage interest rates have diverged to some extent. Judging from the current situation, the demand for housing mortgage loans is relatively stable.

　　Real estate credit policy will be tightened.

　　Recently, the central bank named real estate finance twice, emphasizing maintaining the continuity and stability of real estate financial policies and continuously strengthening the control of funds in the real estate market. A number of insiders told china securities journal that loans in the real estate sector will be managed strictly and prudently in the second half of the year according to the requirements of the regulatory authorities.

　　The president of Suzhou Branch of a big bank said that in the first half of the year, the bank’s investment in real estate accounted for less than 30% of the total investment, and development loans and mortgage loans will be more strictly controlled in the second half of the year.

　　According to the vice president of Wuhan Branch of a joint-stock bank, the real estate credit of the bank did not exceed 40% in the first half of the year. "Every year, our bank’s asset structure layout of the industry is orderly. In the second half of the year, the whole bank will implement total amount control and preferential selection to support rigid demand. In general, banks’ control over real estate credit will become more and more strict. "

　　"Our real estate loans are very few, and now under the requirements of policy regulation, we will not take the initiative to market." The president of a stock bank in Changzhou, Jiangsu Province said that the mortgage interest rates of the first and second suites of the bank are 10% and 15% higher than the benchmark interest rate respectively, and the mortgage interest rates will be adjusted according to market conditions in due course.

　　"From a policy perspective, it is expected that the proportion of real estate in financial resources will be carefully regulated in the future, and there is little room for further improvement in the proportion of real estate in financial resources." Lian Ping, chief economist of Bank of Communications, believes that at present, under the requirement of "housing and not speculating", most first-and second-tier cities have strict control over the property market, and it is impossible to speculate on real estate on a large scale. In the future, real estate credit should do its homework from the structure and match the reasonable demand in line with reality.

　　For example, Lian Ping said that from the perspective of mortgage, under the current strict control policies, the market demand in many places is still rigid and benign, and banks should support it. In terms of development loans, banks and non-bank channels should also give support if there is benign and reasonable demand in the market.

　　The credit direction will be adjusted in the second half of the year.

　　A number of banking industry insiders said that the credit policy will be adjusted around the regulatory requirements in the second half of the year. The vice president of Wuhan Branch of the above-mentioned joint-stock bank said that the bank invested heavily in private enterprises and inclusive finance in the first half of the year, and will increase credit support for manufacturing industry in the second half of the year according to regulatory requirements.

　　Wang Yifeng said that significant growth in manufacturing and medium and long-term loans required further policy arrangements. With the gradual consumption of pre-reserve projects, loans to the public have been weak. In the future, how to promote the rapid growth of manufacturing loans needs further policy guidance. In addition, how to effectively activate the vitality of micro-subjects, especially the effective demand of funds, also needs more effective policy support.

　　It is worth noting that the regulatory authorities have made arrangements to increase support for the manufacturing industry. Yang Liping, chief prosecutor of China Banking and Insurance Regulatory Commission, said earlier that China Banking and Insurance Regulatory Commission asked banks to set annual service targets for manufacturing industry, mainly to tackle key core technologies in the field of sticking neck, and to support key areas such as strategic emerging industries and transformation and upgrading of manufacturing industry, so as to realize that the balance of manufacturing loans was significantly higher than that of last year. At the same time, improve the professional ability of service manufacturing industry, supervise large banks to optimize the term of loans, match the production and research cycle of manufacturing enterprises, and increase the medium and long-term loans. Those who can make credit loans will insist on reviewing the first repayment source and make credit loans.

Jingshang Sinotrans Zi [2022] No.32

Bureau of Commerce of each district, Bureau of Commerce and Finance of Development Zone, and relevant units:

　　According to the relevant provisions of the Notice of the Ministry of Finance and the Ministry of Commerce on Printing and Distributing the Measures for the Administration of Special Funds for Foreign Trade and Economic Development (Cai Jian [2022] No.3, hereinafter referred to as the Measures for Funds) and the Notice of the General Office of the Ministry of Finance and the General Office of the Ministry of Commerce on the Key Work of Special Funds for Foreign Trade and Economic Development in 2022 (Cai Ban Jian [2022] No.37), in order to do a good job in the declaration of import discount projects in 2022, we will now make relevant statements.

　　I. Basic information

　　The import discount is subject to catalog management, and this import discount declaration is based on the Catalogue of Technologies and Products Encouraged to Import (2016 Edition) issued by the National Development and Reform Commission, the Ministry of Finance and the Ministry of Commerce. The catalogue includes three parts: advanced technology encouraged to import, important equipment encouraged to import and key industries encouraged to develop. The Service Trade Department of our bureau is responsible for encouraging the introduction of advanced technology, and the Foreign Trade Operation Department is responsible for encouraging the import of important equipment and encouraging the development of key industries.

　　Second, the enterprise application conditions

　　(1) Import the products listed in the Catalogue of Technologies and Products Encouraged to Import (2016 Edition) issued by the National Development and Reform Commission, the Ministry of Finance and the Ministry of Commerce (hereinafter referred to as the Catalogue) and the new edition of the Catalogue issued according to the changes of the situation (excluding old products), or import the technologies listed in the Catalogue from non-affiliated enterprises.

　　(2) The applicant enterprise for imported products shall be the consuming and using unit on the Import Goods Declaration Form; The applicant for technology import shall be the technology user on the Registration Certificate of Technology Import Contract.

　　(3) The import declaration of imported products shall be completed from July 1, 2021 to June 30, 2022 (subject to the customs clearance date); The imported technology shall execute the contract from July 1, 2021 to June 30, 2022, and obtain the foreign exchange payment certificate issued by the bank.

　　(four) the technology import contract does not contain provisions that violate the regulations of People’s Republic of China (PRC) Municipality on the administration of technology import and export (the State Council DecreeNo. 331st).

　　(5) The equipment imported under "Key Industries to Encourage Development" in the Catalogue is not included in the Catalogue of Imported Commodities Not Exempted from Tax for Domestic Investment Projects (Adjusted in 2012) (Announcement No.83 of Ministry of Finance, National Development and Reform Commission, General Administration of Customs and State Taxation Administration of The People’s Republic of China, 2012).

　　(6) The total amount of imported products and technologies meeting the above conditions shall not be less than 500,000 US dollars.

　　(7) According to the relevant requirements, central enterprises in Beijing (all enterprises affiliated to central enterprises shall be declared through the Central Enterprise Group) shall be declared through their central departments (institutions), and the Beijing Municipal Bureau of Commerce will no longer accept them.

　　Third, the application materials

　　(1) Application documents signed by the legal representative of the enterprise (Annex 1), including: basic information of the enterprise, import purposes, expected benefits, project performance objectives (completion of work and objectives), etc.

　　(2) Notes on the Declaration of Import Discount Matters in 2022 (Annex 2) and electronic data.

　　(3) Business license of the enterprise (photocopy).

　　(4) Application Form for Import Discount Matters in 2022 (Annex 3) and electronic data.

　　(5) Import product order contract or technology import contract (photocopy, Chinese translation is required for non-Chinese contracts).

　　(six) imported products, the need to provide the "People’s Republic of China (PRC) Customs Import Goods Declaration Form" (copy or printed copy of the enterprise retained).

　　(7) If technology is imported, it is required to provide the Registration Certificate of Technology Import Contract, Data Sheet of Technology Import Contract and the foreign exchange payment certificate (photocopy) issued by the bank indicating the technology import contract number. If the technology user is inconsistent with the foreign exchange payment unit, the agency contract of both parties shall be provided. The amount of technology import refers to the amount of technology fees paid for importing technologies in the Catalogue from non-affiliated enterprises through transfer, licensing, commissioned development, cooperative development, technical consultation, etc. (excluding equipment, training, debugging, travel and other expenses, excluding technology import fees paid in proportion based on annual sales and profits). Please indicate the technology import contract number, technology name and the amount of foreign exchange payment that meets the discount conditions on the payment voucher.

　　(8) To import the equipment under "key industries to encourage development", it is necessary to provide the Confirmation of Domestic and Foreign-funded Projects Encouraged by the State (or the Confirmation Notice of Applicable Encouraged Industrial Policies issued by the Customs, including the list and photocopy of imported equipment attached to the confirmation letter or notice), the Certificate of Tax Exemption for Import and Export Goods (photocopy) and the Import Goods Declaration Form (photocopy). If the tax exemption certificate cannot be obtained because the tariff is zero, the tax exemption certificate may not be submitted, but the relevant situation shall be explained in the application report, and the certification materials that the relevant goods are zero tariff shall be submitted; Belonging to the "National Engineering (Technology) Research Center, National Engineering Laboratory, State-recognized Enterprise Technology Center, Key Laboratory, High-tech Entrepreneurship Service Center, New Product Development and Design Center, Scientific Research Pilot Base and Experimental Base Construction" in the third part of the Catalogue, it is not necessary to submit the Confirmation of Domestic and Foreign Projects Encouraged by the State, but it must be submitted to the Ministry of Science and Technology, the National Development and Reform Commission and other departments.

　　(nine) if the important equipment has technical parameters, it is necessary to provide import contracts or product manuals and other relevant certification materials that list the technical parameters of the goods.

　　(ten) the introduction of technology should explain whether it is introduced from affiliated enterprises, and the relevant information should be explained with supporting materials if the enterprise is renamed.

　　The above materials must be stamped with the official seal of the enterprise.

　　Iv. Work progress and reporting time

　　(1) Submit written materials on site from July 25th to July 29th, 2022 (in duplicate).

　　(2) Check the original materials on site from August 8 to August 12, 2022, and submit the bound paper materials (with page numbers) in triplicate and electronic data (submitted by USB flash drive).

　　V. Place and method of submitting materials

　　Venue: The application materials shall be delivered to the conference room on the second floor of Annex 6, Xili South District, Chaoyang Park, Chaoyang District, Beijing.

　　Method: In order to do a good job in epidemic prevention and control and avoid the possible infection risk caused by crowd gathering, this year’s import discount materials are submitted by appointment system. The reporting enterprise shall complete the telephone appointment from July 20th to July 22nd (9:00-18:00), submit the written materials at the site according to the agreed time, and will not accept the appointment afterwards. Each unit shall send at most one person to the site to declare the materials. Please leave the name and mobile phone number of the person when making an appointment.

　　Appointment telephone number for submission of materials: 17610520360

　　Business consultation telephone (product): 55579519

　　Business consultation telephone number (technology): 55579493

　　VI. Training and other arrangements

　　In order to do a good job in the declaration of import discount projects in 2022, the Municipal Bureau of Commerce is scheduled to hold a training meeting on the project declaration process from 15: 00 to 16: 30 on Monday, July 18, and enterprises that intend to declare can voluntarily participate. The training adopts online conference (Tencent conference number: 823614617), and participating enterprises need to download the "Tencent Conference" client in advance.

　　In order to facilitate communication and receive notification information, enterprises applying for intention can scan the QR code (Annex 4) and join the "Beijing 2022 Import Discount Declaration" WeChat group. Please note "enterprise name+contact person name" for enterprises joining the group.

　　I hereby inform you.

Beijing Municipal Bureau of Commerce　　　　

July 13th, 2022　　

Male nannies are still a minority in the market.

　　Near the end of the year, the topic of "Chinese New Year nanny’s daily salary exceeds that of 500 yuan" has attracted attention. According to media reports, during the Spring Festival in 2020, the price of domestic service personnel will all rise, and the daily salary of full-time nannies will also start in 300 yuan, and the highest can reach above 500 yuan.

　　Every year when the Spring Festival is approaching, the salary and shortage of nannies will cause heated discussion. Families who need to hire nannies also say that it is not easy to find a suitable nanny during the Chinese New Year.

　　So, what’s the situation of Hangzhou nanny market this year? Qianjiang evening news recently visited the domestic service market in Zhaohui, Hangzhou, and chatted with the agents and aunts.

　　"Aunt in short supply? You see, we sit here every day waiting for the aunt hired by the employer. " Zhang Fengjuan, head of Chengwang Home Economics Service Department in Hangzhou Zhaohui Home Economics Service Market, said that it is now more difficult to match the needs of both parties: employers have their own set of standards for choosing people; When aunts take jobs, most of them have to weigh various factors such as labor remuneration and service intensity.

　　3,300 yuan to chat for a month, no one did it.

　　"Where are you from?" "How old?" "Going back to your hometown in the New Year?" … … On December 25th, Mr. Wang, a 50-year-old Hangzhou native, wanted to find a nanny for his 75-year-old mother. "My mother lives in an apartment for the elderly, and she is taken care of for eating and washing, and her actions are fairly comfortable. She just wants to find someone to talk with her and look after her at night."

　　He soon surrounded a circle of aunts, but none of them had the will to take this job.

　　"The monthly salary is 3,300 yuan, and the Chinese New Year is coming soon. Such a price will definitely not be found." An aunt from the Northeast is very honest and frank: Even though this kind of work is relatively easy, their main purpose is to make money. "Without money, everything else is useless.".

　　At 3: 00 pm, there are few employers looking for domestic service, and aunts sit and chat in twos and threes, and also share some recruitment news. "I just came to an employer and lived in a five-story villa. It costs 6,000 yuan a month. Will you do it?" An aunt asked. Soon, many aunts around began to discuss. Some people estimated that "cleaning the fifth floor, cooking and looking after the children are very tired and unbearable." Someone bluntly said, "Such a heavy job is not cost-effective."

　　Within a few hours of the reporter’s squatting in the domestic service center, some employers came one after another, but few of them actually signed the contract. Mr. Huang, 51, wanted to find a live-in nanny for the elderly at home. He went around the market several times and didn’t find the right one. He said, "During the Chinese New Year, my salary will definitely go up, and I can accept it, but the main reason is that there is no eye fate. Choosing a nanny depends on the eye fate."

　　It’s hard to find a job after 60.

　　Aunt Han from Jiangxi has been waiting in the market for several days, but she hasn’t waited for her employer. She said, the main reason is my age. "I am 62 years old this year. Many employers will think I am too old, afraid that I will not do things neatly, and I am afraid that I will have physical problems at home and cannot afford this responsibility."

　　"Of course, people in their forties are the most popular," Aunt Han observed some aunts who were negotiating with their employers, and was a little unconvinced. "They are confident, mainly young, but many of them are not as experienced as me."

　　During the interview, Aunt Han told reporters not to always write "nanny shortage". "Look, where is the shortage? Aren’t they all waiting aunts?" She recalled that last year, the market suddenly flooded into a group of "unfamiliar faces" aunts. These aunts said that they saw on TV that Hangzhou was "aunt shortage" and their wages were high, so they ran from Wenzhou and Taizhou. "As a result, I found that this was not the case at all and went back the next day."

　　Aunt Han also complained that the arrival of a large number of "young" aunts would take away her few opportunities.

　　Male nanny wronged: I can cook and wash clothes.

　　"Where did you come from?" "I’m not doing it at home now. I’m a security guard."

　　"Why did you come here?"

　　"Being a nanny again."

　　An aunt sat next to Lao Zhang and chatted with him. Lao Zhang, 51, was the only male candidate in the market that day. He changed from security guard because he felt that the income from work in the domestic industry was stable. "There are few cases of wage arrears and family warmth."

　　As early as 2006, Lao Zhang entered the domestic industry. Later, because the acceptance of male nannies decreased, he began to find other jobs.

　　Lao Zhang said that most families don’t accept male nannies. On the one hand, many male nannies smoke and drink, causing dissatisfaction among the elderly in the family, "ruining the atmosphere." In addition, male nannies spend more on eating and drinking at home. "For example, if a woman eats a bowl of rice, we may have to eat two bowls, which is a bit too much for the average family."

　　The aunt on the side took the conversation. "The male nanny is completely uncompetitive compared with us. Cleaning, washing clothes and cooking are all done well by women. "

　　Lao Zhang was anxious. "I can cook and wash clothes as well, and I am stronger than you."

　　Lao Zhang decided to try again while the Chinese New Year was coming. He said, "It’s best to find a long-term nanny. If not, you can be a short-term babysitter with high salary."

　　Aunties gave him advice. Generally, after the twentieth day of the twelfth lunar month, there will be a "replacement tide", and many nannies who used to live at home may come out to be substitutes. The salary depends on the workload of the new employer’s family, usually 300-500 yuan a day.

　　Lao Zhang immediately asked after listening, "Is 500 a day to see the elderly or children?" "Children, of course."

　　Lao Zhang gave a cry and stopped talking. He knows that the elderly who are seriously ill or fat are more willing to choose him.

　　Chinese New Year red envelopes test the employment relationship best.

　　In Zhaohui domestic service market, we know that during the Chinese New Year, most aunts hope that their employers can double their wages or give them a big red envelope. Many aunts said that employers usually give them a salary increase, red envelopes and clothes during the Spring Festival. If some employers don’t want to, they may quit their jobs or jump ship when the Spring Festival approaches, and come to the domestic market to see new opportunities.

　　"But most aunts still go home during the Chinese New Year, and there are indeed a few substitutes." An aunt said.

　　Aunt Ke, who is going to stay in Hangzhou for the Spring Festival this year, said that the salary for the Spring Festival is expected to be one day in 400 yuan. However, she said that domestic service agents are unwilling to raise prices too high. "They are afraid of disrupting the market, and they are afraid that the asking price will be too high and the signing rate will be reduced, which will affect their commission." So sometimes, she will make two preparations, talk to her employer herself, or go to the intermediary to sign an agreement. "Without an agreement, there is no guarantee."

　　At present, Aunt Ke has a potential employer and is very satisfied with her, but Aunt Ke still wants to wait and see. "Because I need to take care of an old man with a stroke." She said that most aunts are more willing to take care of children, and their wages are relatively high. Generally, they spend more than 6,000 yuan a month to look after children and 4,000-5,000 yuan to take care of the elderly.

　　In the domestic service market, we also found that most of them came from older aunts and employers.

　　"Now many post-80s and post-90s couples are looking for domestic service, and they prefer to find it on various Internet platforms, which will also divert some customers. Most of the people who come to the housekeeping center to find their aunts are elderly people. " Zhang Fengjuan said that now, some young aunts will also choose to call the domestic service platform online.

　　Should I give the nanny a red envelope during the Spring Festival? (Reporter Chen Xi)

　　CCTV News:On January 13th, 2017, a press conference was held in the press room of the State Council Information Office. When introducing the import and export situation in 2016, Huang Songping, spokesman of the General Administration of Customs, said that in 2016, the world economy recovered difficultly and the domestic economy improved steadily.

　　He reported on China’s foreign trade import and export in 2016. In 2016, the world economy recovered difficultly, and the domestic economy improved steadily. According to customs statistics, in 2016, the total import and export value of goods in China was 24.33 trillion yuan, down 0.9% from 2015. Among them, exports were 13.84 trillion yuan, down 2%; Imports reached 10.49 trillion yuan, up by 0.6%; The trade surplus was 3.35 trillion yuan, narrowing by 9.1%.

　　The specific situation mainly includes the following aspects:　

　　I. Imports and exports stabilized quarter by quarter, and both achieved positive growth in the fourth quarter. In 2016, China’s import and export showed a trend of low before and high after, and stabilized and improved quarter by quarter. Among them, in the first quarter, China’s import and export, export and import value decreased by 8.2%, 7.9% and 8.6% respectively; In the second quarter, the value of import and export, export and import decreased by 1.1%, 0.8% and 1.5% respectively; In the third quarter, the import and export value increased by 0.8% and 2.3% respectively, while the export value decreased by 0.3%; In the fourth quarter, the value of import and export, export and import increased by 3.8%, 0.3% and 8.7% respectively.

　　Second, the import and export of general trade increased and its proportion increased. In 2016, China’s general trade import and export was 13.39 trillion yuan, up 0.9%, accounting for 55% of China’s total import and export value, up 1 percentage point from 2015, and the trade pattern structure was optimized.　

　　Third, export growth to some countries along the Belt and Road. In 2016, China’s exports to Pakistan, Russia, Poland, Bangladesh and India increased by 11%, 14.1%, 11.8%, 9% and 6.5% respectively. In the same period, China’s exports to the EU increased by 1.2%, to the United States increased slightly by 0.1%, and to ASEAN decreased by 2%, accounting for 46.7% of China’s total exports.　

　　Fourth, the proportion of private enterprises’ exports continued to maintain the first place. In 2016, the import and export of private enterprises in China was 9.28 trillion yuan, an increase of 2.2%, accounting for 38.1% of China’s total foreign trade. Among them, exports were 6.35 trillion yuan, down 0.2%, accounting for 45.9% of the total export value, and continued to maintain the top position in export share; Imports increased by 8.1%.

　　Five, mechanical and electrical products, traditional labor-intensive products are still the main export. In 2016, the export of mechanical and electrical products in China was 7.98 trillion yuan, down by 1.9%, accounting for 57.7% of China’s total export value. Among them, the export of medical instruments and instruments increased by 6.1%, and the export of storage batteries increased by 4%. In the same period, the total export of traditional labor-intensive products was 2.88 trillion yuan, down 1.7%, accounting for 20.8% of the total export value. Among them, the export of textiles, toys and plastic products increased.　

　　6. The import volume of bulk commodities such as iron ore, crude oil and copper maintained growth, and the prices of major imported commodities remained at a low level, but the decline narrowed. In 2016, China imported 1.024 billion tons of iron ore, an increase of 7.5%; 381 million tons of crude oil, up by 13.6%; 256 million tons of coal, up by 25.2%; 13.21 million tons of steel, an increase of 3.4%; 4.95 million tons of copper, up 2.9%; Refined oil was 27.84 million tons, down 6.5%. In the same period, China’s import prices generally fell by 2.1%. Among them, the average import price of iron ore decreased by 0.5% year-on-year, crude oil decreased by 18.6%, refined oil decreased by 10.8%, coal decreased by 0.1%, copper decreased by 6%, and steel decreased by 5.5%, which was narrower than that in the first half and the first three quarters.

　　Deeply understand and accelerate the development of new quality productive forces

　　Commentator of Qiushi magazine

　　"Developing new-quality productive forces is an inherent requirement and an important focus for promoting high-quality development. We must continue to do a good job in innovation and promote the accelerated development of new-quality productive forces."

　　On January 31, 2024, General Secretary of the Supreme Leader delivered an important speech when he presided over the 11th collective study in the Political Bureau of the Central Committee, systematically expounded the scientific connotation of new quality productivity from the combination of theory and practice, profoundly pointed out the great significance of developing new quality productivity, and put forward clear requirements for developing new quality productivity. From putting forward "new quality productive forces" during a local inspection in 2023, to emphasizing "developing new quality productive forces" at the Central Economic Work Conference, and then making a systematic exposition during the collective study of the Politburo, the General Secretary’s series of important expositions and major arrangements on developing new quality productive forces have profoundly answered the important theoretical and practical questions of "what is new quality productive forces, why should we develop new quality productive forces, and how to develop new quality productive forces", which provides a basis for promoting high-quality development in the new journey.

　　High-quality development needs the guidance of new productivity theory.

　　Marxism holds that productivity is the material premise of all social life, the most active and revolutionary factor to promote social progress, and the productivity standard is a fundamental standard to measure social development. Marx and Engels pointed out that "the sum of people’s productive forces determines the social situation". Unswervingly promoting the development of productive forces and constantly improving people’s living standards on this basis is the fundamental starting point of all our party’s work.

　　The fundamental task of socialism is to liberate and develop social productive forces, and the superiority of socialism over capitalism lies in its ability to develop productive forces faster and better. After the founding of New China, Comrade Mao Zedong proposed that "the purpose of socialist revolution is to liberate productive forces". After the reform and opening up, Comrade Deng Xiaoping clearly pointed out that "there are many tasks of socialism, but the fundamental one is to develop productive forces". Since the founding of the People’s Republic of China, our Party has only spent several decades leading the people to complete the industrialization process that developed countries have gone through for hundreds of years, promoting China’s development into the second largest economy in the world, and creating a miracle of rapid economic development that is rare in the world. It is extremely important to attach great importance to productivity standards, always adhere to the liberation and development of social productivity, and constantly enhance the comprehensive national strength of socialist countries.

　　Entering a new era, China’s economic development has entered a new stage. The CPC Central Committee with the Supreme Leader as the core regards adhering to high-quality development as the last word in the new era, consistently liberates and develops social productive forces, makes a series of major decisions and arrangements, and pushes China’s economy to a higher-quality, more efficient, fairer, more sustainable and safer development path. The level of productive forces has achieved great improvement and breakthrough development, forming a new qualitative state of productive forces development. In view of this new situation, the General Secretary of the Supreme Leader clearly pointed out that "the new quality productivity has been formed in practice and has shown a strong driving force and support for high-quality development".

　　At the same time, we should also see that there are still a lot of factors restricting high-quality development, such as some key core technologies being controlled by people, the problems of "big but not strong" and "all but not excellent" in the industry, and the pressure of transforming the production and living system to green and low carbon, and so on. To further promote high-quality development, we must form new industries, new models and new kinetic energy, firmly grasp key core technologies in our own hands, build a modern industrial system that is self-controllable, safe, reliable and competitive, build a green and low-carbon circular economy system, and realize connotative growth driven by innovation. In the final analysis, it is to achieve greater breakthroughs and greater development at the level of productivity. This puts forward a new topic for our theoretical development, and we need to further deepen our understanding of the new quality productivity. General Secretary of the Supreme Leader emphasized that the development of new quality productive forces "requires us to summarize and generalize theoretically to guide new development practice". General Secretary Supreme Leader’s important exposition on developing new-quality productive forces points out the important focus of promoting high-quality development, embodies a profound grasp of the development law of productive forces and the outstanding problems facing China’s development, and is a profound summary of the law of China’s economic construction, further innovating and developing Marxist productive forces theory, which is an important part of Supreme Leader’s economic thought and has important theoretical and practical significance. We must study deeply and deeply understand it and use it to guide practice.

　　Grasping the scientific connotation of new quality productivity

　　What is new quality productivity? General Secretary of the Supreme Leader pointed out: "In a nutshell, the new quality productivity is an advanced productivity that plays a leading role in innovation, gets rid of the traditional economic growth mode and productivity development path, has the characteristics of high technology, high efficiency and high quality, and conforms to the new development concept. It was born out of revolutionary breakthrough in technology, innovative allocation of production factors, and deep transformation and upgrading of industries. The basic connotation is the leap of laborers, labor materials, labor objects and their optimized combinations, and the core symbol is the substantial improvement of total factor productivity. Its characteristics are innovation, the key is high quality, and the essence is advanced productivity. " This important exposition profoundly points out the basic theoretical issues such as the characteristics, basic connotations, core symbols, characteristics, keys and essence of the new-quality productive forces, and provides a fundamental basis for us to accurately grasp the scientific connotation of the new-quality productive forces.

　　New-quality productivity is an advanced productivity with innovation as the leading role, and its characteristic is innovation. The key to grasping the new quality productivity lies in a deep understanding of the key role of innovation in improving productivity. Looking back at history, from the mechanization of the first industrial revolution in the 18th century to the electrification of the second industrial revolution in the 19th century, and then to the informationization of the third industrial revolution in the 20th century, subversive scientific and technological innovations have brought about great liberation of social productive forces and great leap in living standards, which fundamentally changed the development track of human history. Some countries have seized the rare opportunity of scientific and technological revolution and industrial transformation, and their comprehensive national strength has increased rapidly, even becoming a world power. At present, a new round of scientific and technological revolution and industrial transformation is ready to go, and some major disruptive technological innovations are creating new industries and new formats. Information technology, biotechnology, manufacturing technology, new material technology and new energy technology have penetrated into almost all fields, which has led to major group technological changes characterized by green, intelligence and ubiquity. We have ushered in the historic intersection of the new round of scientific and technological revolution and industrial transformation in the world and the transformation of development mode in China, and are faced with a once-in-a-lifetime historical opportunity. New quality productive forces have emerged as the times require and have continued to grow and develop in practice. New quality productivity represents the new direction and trend of scientific and technological revolution and industrial transformation, and represents the development direction of advanced productivity. To accelerate the formation of new quality productive forces is to gain a leading position in the development of productive forces, take the lead in new fields and new tracks, and win the initiative in development in fierce international competition.

　　Marx pointed out that "productivity, that is, the development of production capacity and its elements" and "labor productivity is developing with the continuous progress of science and technology". New quality productivity is the product of productivity development and scientific and technological progress, and it is a revolutionary promotion of human ability to transform nature. This promotion is holistic and fundamental, and as its constituent elements, workers, labor materials and labor objects must also have new connotations. As far as workers are concerned, workers are the most active factor in productivity. What matches the new quality productivity is no longer ordinary workers who focus on simple repetitive work, but strategic talents who can create new quality productivity and applied talents who can master new quality production materials skillfully. As far as labor materials are concerned, as a "measuring instrument for the development of human labor force", with the development and wide application of original technology and subversive technology, more and more new production tools will be produced, and old and backward production tools will be gradually replaced by new and advanced production tools, which is also the main symbol of the development of productive forces. As far as the object of labor is concerned, the improvement and extensive use of labor materials will inevitably lead to the expansion of the scope of labor objects, including not only traditional natural materials, but also intangible forms such as data that are not limited by space and time.

　　Only by combining various factors of production can we form realistic productive forces. New quality productivity is not only reflected in the innovative development of various factors, but also in the innovative development of the combination of production factors. With the development and changes of laborers, labor materials and labor objects in the new quality productivity, the optimized combination of the three will also undergo revolutionary changes, bringing new industries, new formats and new models, and forming new kinetic energy and new advantages that drive economic development. Productivity determines production relations, and production relations react on productivity. The formation of new quality productive forces will inevitably lead to revolutionary changes in production relations, and it is necessary to form new production relations to adapt to them, and protect, liberate and develop them. Constantly reforming and perfecting the relations of production and forming new management modes and new institutional mechanisms are important guarantees for promoting the continuous development of new quality productive forces.

　　In a word, we should deeply realize that the new quality productivity is not the local optimization and simple iteration of the traditional productivity, but the advanced productivity, which is spawned by the revolutionary breakthrough of technology, the innovative allocation of production factors and the deep transformation and upgrading of industries. It will certainly bring about changes in the development mode and production mode, promote the new leap of China’s social productivity and lay a more solid material and technological foundation for building a socialist modern country in an all-round way.

　　Promote new quality productivity and accelerate development.

　　"We can’t fall behind on the new track", "We should catch up, strive to achieve, run and even lead". At the Central Economic Work Conference in 2023, the words of the Supreme Leader General Secretary were inspiring. On the new journey of building a strong country and national rejuvenation, the most fundamental thing to promote Chinese modernization is to realize the modernization of productive forces. The essence of new quality productivity is advanced productivity. It is necessary to unify thoughts and actions with the spirit of the important speech of the Supreme Leader General Secretary and the decision-making arrangements of the CPC Central Committee, focus on the central task of economic construction and the primary task of high-quality development, further enhance the consciousness and initiative of promoting the development of new-quality productive forces, and improve the practical skills of promoting the development of new-quality productive forces.

　　— — Accelerate scientific and technological innovation. Scientific and technological innovation can give birth to new industries, new models and new kinetic energy, which is the core element of developing new quality productivity. We must strengthen scientific and technological innovation, especially original and subversive scientific and technological innovation, accelerate the realization of high-level scientific and technological self-reliance, lay a solid battle for key core technologies, and cultivate new kinetic energy for developing new quality productive forces.

　　— — Accelerate industrial innovation. Industry is the carrier of productive forces, and scientific and technological achievements can only become social productive forces through industrialization. It is necessary to apply scientific and technological innovations to specific industries and industrial chains in a timely manner, transform and upgrade traditional industries, cultivate and expand emerging industries, lay out and build future industries, and improve the modern industrial system. Layout the industrial chain around the development of new quality productivity, improve the resilience and safety level of the industrial chain supply chain, and ensure that the industrial system is self-controllable, safe and reliable.

　　— — Accelerate the innovation of development mode. Green development is the background of high-quality development, and new quality productivity itself is green productivity. We must speed up the green transformation of development mode, firmly establish and practice Lucid waters and lush mountains are invaluable assets’s concept, unswervingly take the road of ecological priority and green development, and vigorously advocate a green and healthy lifestyle in the whole society.

　　— — Accelerate the innovation of system and mechanism. The relations of production must meet the requirements of the development of productive forces. To develop new quality productive forces, we must further deepen the reform in an all-round way and form a new type of production relationship that is suitable for it. It is necessary to deepen the reform of the economic system and the scientific and technological system, and strive to get through the blocking points that constrain the development of new quality productive forces. Expand high-level opening to the outside world and create a good international environment for the development of new quality productive forces.

　　— — Accelerate the innovation of talent work mechanism. Talent is the first resource, and the essence of innovation drive is talent drive. In the final analysis, the development of new quality productive forces depends on innovative talents. In accordance with the requirements of developing new quality productive forces, we should smooth the virtuous circle of education, science and technology and talents, and improve the working mechanism of talent training, introduction, use and rational flow. Improve the income distribution mechanism in which factors participate, and create a good atmosphere to encourage innovation and tolerate failure.

Original clinical nutrition network

Author: Plain dust-free

Postdoctoral fellow, University of California San Diego Cancer Center. Nutritionist, food safety engineer

Washington University in St Louis, graduate student in public health, pre-medical doctor. Doctor of Public Health from Louisiana State University Health Sciences Center, and Delta Omega Doctoral Award, one of the highest honors of American public health graduates. "China Clinical Nutrition Network" signed a dietitian

His main research interests are smoking cessation, alcohol withdrawal and marijuana withdrawal, nutrition and chronic diseases, and cancer prevention and control.

The article was first published in big doctor magazine, and was revised by the author and then pushed again.

China Clinical Nutrition Network has been authorized to reprint

Nutrients are various substances needed by the human body, which support the growth, development and normal physiological functions of the human body. The nutrients needed by the human body can be roughly divided into seven categories. In the past, we used 15 issues to introduce the physiological functions, excess and deficiency, food sources and hot topics of seven nutrients in detail.

The following is a brief summary of them and a link to introduce each nutrient in detail (click the title to enter directly):

General introduction

The first issue:

(Image from WeChat public platform public photo gallery)

1. protein

An important component of the human body, used to repair and build body tissues, is also the main component of enzymes, hormones and antibodies. Protein is rich in meat, eggs, beans, nuts and seeds.

Phase II:

(Image from WeChat public platform public photo gallery)

2. Fat

Provide energy for the body and help absorb fat-soluble vitamins. It includes saturated fat, monounsaturated fat and polyunsaturated fat. Healthy sources of fat include fish, nuts, seeds and olive oil.

The third issue:

(Image from WeChat public platform public photo gallery)

3. carbohydrates

The main energy source of the human body. It includes sugar, starch and fiber. Whole grains, vegetables, fruits and beans are good sources of carbohydrates.

Phase IV: Phase V:

(Image from WeChat public platform public photo gallery)

4. vitamins

Nutrients that the human body cannot make by itself and must obtain from food or supplements. They contribute to various physiological functions of the body, including immunity, vision and bone health. Vitamins are mainly obtained by eating fresh vegetables, fruits and whole grains.

Issue 6: Issue 7: Issue 8:

(Image from WeChat public platform public photo gallery)

5. minerals

It is very important for bone health, muscle function, nerve conduction and some biochemical reactions. Foods rich in minerals such as fresh vegetables, fruits, whole grains, nuts and seeds.

Issue 9: Issue 10: Issue 11: Issue 12:

(Image from WeChat public platform public photo gallery)

6. Dietary fiber

Although they are not absorbed by human body, they have many health benefits, including improving digestion, preventing constipation, controlling blood sugar and reducing the risk of heart disease. Dietary fiber mainly comes from vegetables, fruits, whole grains and beans.

Issue 13:

(Image from WeChat public platform public photo gallery)

7. Water

The main component of the human body is vital to the functions of all body systems, including temperature regulation, waste removal and transportation of nutrients.

Issue 14: Issue 15:

(Source: WeChat public platform public photo library)

Attachment: Nutritional catering

Why do people eat so many kinds of food every day? Because the body needs balanced nutrients! Every food contains different nutrients, so we need to take them from different foods. Generally, weight catering method and energy catering method can be used.

Issue 16: Issue 17: In the next series, we will use 10 issues to introduce nutrition and health in different life cycles, including the potential impact of newborn birth weight on health, eating and sleeping of babies, health and nutrition needs of children and adolescents, and nutrition needs and health management in early, middle and late adulthood. Regarding the life cycle, if you have any special topics you want to know, please leave a message.

Original title: "[Popular Science Nutrition] A summary of the seven nutrients and nutritional meals that the human body needs! 》

Read the original text

Percutaneous argon-helium knife treatment of liver cancer is one of the non-surgical treatment methods in recent years, which indicates that the treatment of liver cancer has entered a new stage of cryotherapy. Professor Yang Yongping, director of the Department of Hepatology and Medicine, Fifth Medical Center, General Hospital of Chinese People’s Liberation Army, shared the cryoablation treatment of liver cancer in the first multi-disciplinary cooperation forum of Anhui Province, and the platform of treating liver cancer with sincerity specially compiled the essence for readers.

Overview of liver cancer

In China, hepatocellular carcinoma (HCC) is the fifth largest malignant tumor and the second largest tumor-related death cause, with a five-year survival rate of only 14.2%. How to treat liver cancer scientifically and benefit the long-term survival of patients is an important clinical problem, and it is also the gold standard to measure the treatment level of medical units. In 2022, the updated guidelines for prognosis and treatment strategy of clinical liver cancer (BCLC) in Barcelona proposed that patients with HCC should be accurately evaluated individually. Doctors need to fully consider the scope and load of the tumor, the nutritional status and human performance of the patient, complications, age, etc., and formulate individualized treatment methods for the patient.

No matter what stage the patient is in, local ablation is an important treatment. At present, a variety of mature local ablation treatment techniques for liver cancer have been formed, including radiofrequency ablation, microwave ablation, cryoablation, irreversible electroporation (nano-knife) and so on.

Overview of cryoablation therapy

Cryoablation therapy has experienced a long development process. In 1800, James Arnott discovered that the mixture of ice and salt could delay the progress of breast cancer, uterine cancer and skin cancer. In 1950, liquid nitrogen and dry ice were used to treat different kinds of diseases, especially benign skin lesions. In 1961, Cooper and Le introduced the first automatic cryosurgical equipment, but it used liquid nitrogen as refrigerant, which had many complications and was only used in laparotomy. In the 1970s and 1980s, liquid nitrogen needle was used to treat prostate hypertrophy and prostate cancer, but the cryoablation technology was stagnant due to many complications. In the 1990s, intraoperative ultrasound monitoring of freezing process was used in surgery by scholars, and argon was studied as the refrigerant. In 1998, the third generation cryosurgery system (Argon-Helium cryosurgery system) came out in the United States, which used argon as the refrigerant and helium as the heat medium, bringing revolutionary progress to minimally invasive cryosurgery. In 2000, cryotherapy entered American medical insurance. In 2003, the World Congress of Targeted Cancer Therapy recommended cryoablation as the first choice for advanced lung cancer and liver cancer. In 2010, the standardized diagnosis and treatment of liver cancer promoted by the Health Planning Commission listed cryoablation as a local treatment for liver cancer. In 2016, after more than 10 years of unremitting efforts, Professor Yang Yongping’s team led the overall and comprehensive innovation and development of percutaneous cryoablation of liver cancer at home and abroad, changed the international prejudice on cryoablation of liver cancer, turned the small path into the big road, the irregular into the norm, and the unpopular into the hot spot.The technological innovation of cryoablation of liver cancer won the first prize of Beijing Science and Technology Progress Award. In 2018, 2019 and 2020, experts’ consensus on imaging-guided cryoablation for lung cancer, experts’ consensus on imaging-guided cryoablation for bone and soft tissue tumors, experts’ consensus on imaging-guided cryoablation for kidney cancer and experts’ consensus on imaging-guided cryoablation for liver cancer were released respectively. So far, NCCN, AASLD, APASL, EASL and other guidelines have recommended cryoablation for the treatment of primary liver cancer.

At present, the Department of Hepatology Medicine of the General Hospital of the Chinese People’s Liberation Army has become the largest medical center for treating liver tumors in the world last year, constantly exploring the innovation of cryoablation technology, adopting high-vacuum heat insulation technology, only destroying the tumor site without damaging the surgical path, and adopting multi-stage heat exchange technology, which makes the refrigerant utilization rate higher and the cooling rate faster, and it is easier to induce the frozen immune response of liver cancer patients, activate their own anti-tumor immunity and produce ectopic tumor inhibition.

Therapeutic mechanism and characteristics of cryoablation technology

The cryoablation area is composed of central coagulative necrosis area and peripheral tissue injury area with different degrees. The mechanism of rapid direct cell necrosis in the central area includes mechanical damage caused by ice crystal formation inside and outside the cell and osmotic damage caused by dehydration and rupture of the cell. Peripheral injury areas are mainly related to freezing-related secondary injuries, including hypoxia death of tumor tissue caused by blood embolism, apoptosis caused by reversible injury, and waterfall-like ectopic tumor suppression by stimulating immune regulation.

The characteristics of cryoablation technology include: ① clear treatment boundary, real-time monitoring under image, safe and reliable treatment; ② Treatment can stimulate human immunity and strengthen tumor treatment; ③ Physical therapy is non-toxic to human body, with extremely low side effects; ④ The treatment is painless, without general anesthesia and participation of anesthesiologists, and the treatment is convenient; ⑤ Not limited by the artificial pacemaker installed in the body; ⑥ Effective, suitable for lung cancer, liver cancer, kidney cancer, breast cancer, prostate cancer and other solid tumors.

In addition, ultrasound, CT, laparoscopy or intraoperative direct vision guidance can be used for cryoablation treatment, and the tumor position and the formation of ice hockey can be monitored in real time.

Current situation of percutaneous cryoablation of HCC

Before 2005, based on the previously reported clinical research results, there were many complications, such as bleeding, liver parenchyma frost crack, freezing shock, coagulation dysfunction and so on. International scholars were cautious about this technology. After 2005, percutaneous cryoablation for liver cancer has developed in China, especially with the publication of China’s continuous clinical summary and high-level evidence in the top international journal Hepatology. More and more clinical studies have confirmed that percutaneous cryoablation for liver cancer is safe and effective, and international scholars have a positive attitude.

Professor Yang Yongping’s team took the lead in conducting clinical research to determine the indications of liver cirrhosis-related HCC by percutaneous cryoablation. In this study, 1681 patients with liver cirrhosis-related HCC and 682 patients with advanced HCC were selected, and the indications and standards of complete cryoablation and selective cryoablation were established. It was proposed that the ablation volume of the target lesion should exceed 50% of the tumor volume or minimize the tumor load, relieve the symptoms caused by the tumor, improve the quality of life and prolong the survival time. The study also innovatively changed the percutaneous puncture to guide needle to locate the introduction of vascular sheath to solve the problem of bleeding after cryoablation, which has been cited by foreign counterparts for many times and suggested routine application.

Indications for complete cryoablation of liver cancer:

① The maximum diameter of a single tumor is less than 5 cm, or the number of tumors is less than 3, and the maximum diameter is less than 3 cm;

② Recurrence after surgical resection or other local treatment meets the conditions ①;

③ Child-Pugh A or B of liver function, bilirubin level ≤51.3μmol/L, or reaching this standard after medical treatment;

④ The blood coagulation function is good (prothrombin activity > 40%, platelet count > 30×109//L, using sheath hemostasis and packing system);

⑤ECOG PS ≤2；

⑥ Cirrhosis, including a history of chronic liver disease, with enlarged hepatic fissure/metacentric colon/esophageal varices/gastric varices/serrated liver surface, a history of upper gastrointestinal bleeding or ascites, and platelets < 100×109/L..

Indications for selective cryoablation of liver cancer:

① Single tumor with a maximum diameter of > 5cm or multiple tumors with a maximum diameter of > 3cm that cannot be surgically removed, regardless of whether there is tumor thrombus in portal vein;

② Child-Pugh A or B liver function classification, bilirubin level ≤51.3μmol/L or reaching the standard after medical treatment;

③ The blood coagulation function is good (prothrombin activity > 40%, platelet count > 30×109/L, using sheath hemostasis and packing system);

④QECOG PS ≤2；

⑤ Cirrhosis, including a history of chronic liver disease, with widened hepatic fissure/metacentric colon/esophageal varices/gastric varices/serrated liver surface, a history of upper gastrointestinal bleeding or ascites, and platelets < 100×109/L..

In addition, Professor Yang Yongping’s team innovatively established measures to prevent and treat complications of percutaneous cryoablation of hepatocellular carcinoma. In this study, 3321 patients were selected, and the measures of percutaneous cryoablation of liver cancer complications were established and verified (Table 1).

Table 1 Measures for Complications of Percutaneous Cryoablation of Liver Cancer

Moreover, the study has achieved encouraging clinical results, which increased the complete tumor ablation rate by 10.6%, reduced the local tumor recurrence rate by 30.3% in 5 years, and improved the 5-year survival rate by 16.6%.

Advantages of cryoablation in the treatment of hepatocellular carcinoma

Although cryoablation has distinct advantages over radiofrequency ablation (RFA), there is no RCT study in the past to directly compare the efficacy of ablation of liver cancer, especially the safety. Professor Yang Yongping’s team designed RCT study in five years to evaluate the efficacy and safety of percutaneous cryoablation and radiofrequency ablation of liver cancer. For the tumor, there were statistical differences in the local tumor progression rate between the two groups at 1, 2 and 3 years: 3%, 7% and 7% in the frozen group, respectively; The RF group was 9%, 11% and 11% respectively (P = 0.043). Subgroup analysis: For hepatocellular carcinoma with a diameter of > 3cm, cryoablation has a lower local tumor progression rate (cryoablation vs. RF: 7.7% vs. 18.2%, P=0.041). There was no statistical difference in the local tumor progression rate between 1-2cm (frozen vs. RF: 0% vs.2.4%, P=1.000) and 2.1-3.0cm (frozen vs. RF: 4.1%vs.7.1%, P=0.656). The results were published in Hepatology magazine and also in China.

Professor Yang Yongping’s team also confirmed that cryoablation of HCC can produce ectopic tumor inhibition, with the incidence of ectopic tumor inhibition of 6.3%, and the median survival time of patients with ectopic tumor inhibition was significantly prolonged. The mechanism is related to the down-regulation of PD-1/PD-L1 and regulatory T cells after ablation. In addition, argon-helium cryotherapy is effective for elderly HCC.

Unresolved problems in cryoablation of HCC

There are also many problems to be solved in the process of cryoablation for HCC in the future:

1. Does tumor cell ablation release specific tumor cell death signal?

2. How can freezing produce the best ratio of necrosis and apoptosis?

3. Are the cytokines released after freezing derived from tumor microenvironment or natural immune response, and what is their time sequence?

4. Will the functional essence and time sequence of antigen presenting cells that absorb necrotic tissue change after cryoablation?

5. What is the effect of cryoablation and absorption of necrotic tissue on the immunosuppressive function of the body? How to reduce the immunosuppression of the body?

Expert introduction

　

Professor Yang Yongping.

Chinese people’s liberation army general hospital No.5 medical center

Director, Department of Hepatology and Medicine, PLA General Hospital

Chief physician, professor, doctoral tutor

Silver Star of Science and Technology of the General Logistics Department, winner of special allowance of the State Council

Chairman of the Professional Committee of Liver Diseases of China Research Hospital Association

Director of China Hepatitis Foundation

Director of China Research Hospital Association

Vice Chairman of Liver Disease Professional Committee of Beijing Branch of Chinese Medical Association

Vice Chairman of Liver Disease Professional Committee of Beijing Society of Integrated Traditional Chinese and Western Medicine

Take the lead in the major special topics of the "Thirteenth Five-Year Plan and Twelfth Five-Year Plan" of the country, the key topics of the "Twelfth Five-Year Plan" of the army and the key topics of the Beijing Municipal Science and Technology Commission in integration of defense and civilian technologies; Won one national science and technology progress award, one first prize of Beijing science and technology progress award and six second prizes of military science and technology progress award.

Finishing/platform review/Professor Yang Yongping

This article is only for medical and health professionals to understand information, and does not represent the views of this platform. This information cannot replace professional medical guidance in any way, nor should it be regarded as medical advice. If the information is used for purposes other than understanding the information, the platform and the author shall not bear the relevant responsibilities.