Liang chen and Lu Jing, the sweet couple CP, have become the new wall of the audience. The love between them from the internet to reality has brought the sweetest candy in spring to countless audiences.

　　Of course, this drama is more than just "sprinkling sugar". In the love relationship between liang chen and Lu Jing, the audience can see that the feelings are clean and pure. Under this emotional core, it also stands out in the "sister-brother relationship".

　　At the end of the drama, Xu Mengjia, the screenwriter, accepted an exclusive interview with Sina Entertainment. In addition to sharing the creative process of the drama, she also responded to some questions raised by the audience.

　　From network to reality, it takes a process.

　　Sina Entertainment: Why did liang chen and Lu Jing fall in love online for so long? Many viewers are anxious to see their sweet interaction.

　　Xu Mengjia: The first story tells that online dating comes into reality. Online dating is different from love in real life. It can quickly fall in love with a person at first sight. When online dating, Lu Jing didn’t know liang chen’s true identity, let alone his height, weight, age and appearance. Moreover, liang chen also turned on a voice changer, which will make Lu Jing even more uneasy. Another point is that Lu Jing and liang chen didn’t go for online dating at first.

　　During the game, we let two people have feelings for each other, and then admit that they like him/her without knowing the identity of the other person, and they are willing to go to real life. This decision is not so easy to make, and it needs to be cautious, so it needs some emotional foreshadowing to reach the degree that the last two people are willing to go to the show.

　　Sina Entertainment: In the process of playing games, how do two people’s emotions progress step by step?

　　Xu Mengjia: When we first made the outline, we sorted out the emotional progressive relationship between the two people. First of all, we always think that the first five episodes of the game are very important. In the first game, it was Lu Jing who fully demonstrated his skills, and liang chen admired him very much. But at the same time, liang chen also fully demonstrated his own dishes, and Lu Jing was actually a little disgusted and depressed.

　　By the second time, liang chen had already made him a human backpack and sent him bullets. This kind of behavior was actually touching for Lu Jing. At the same time, because he felt the admiration of liang chen, he also wanted to show off his skills. Unexpectedly, he overturned, and it would be a little fun for them to start playing again.

　　When we arrived at the prison scene, we wanted to make an obvious progress in their feelings, so we emphasized that liang chen had some funny operations during his play, and liang chen was there to protect Lu Jing when he hung up. When Lu Jing came back, he asked liang chen why you didn’t run? Liang chen said that because we are going to die together, in this process, Lu Jing felt that the girl was very helpful. So I have changed a lot for her.

　　Through these games, we let Lu Jing and liang chen feel the joy and fun of playing with each other, and at the same time let them see each other’s bright spots.

　　Sina Entertainment: What are the considerations in the design of game scenes?

　　Xu Mengjia: We changed the original PVP game into PVE, and changed the battle between players into a confrontation between people and robots. First, we kept the foundation of the gunfight game, followed by the collaboration between players, and the design of the copy of the game. If we just beat around in a map, it would be too boring, so we set different scenes for each copy, including the royal banquet hall, the prison and the ancient tomb jungle. In this case, it means that the audience can have a visual ice cream effect, and they can see that the hero and heroine have different costumes and different tasks in different scenes, and they will have a sense of freshness every time they are in the game mode.

　　Sina Entertainment: In the previous plot, there were many coincidences between liang chen and Lu Jing, and netizens commented that it was "too routine". What do you think of such comments as a screenwriter?

　　Xu Mengjia: I admit that this problem does exist, but there are actually objective reasons. First of all, the two of them are online dating. As I said before, there needs to be a process to warm up their feelings in the game. Two people don’t meet, but we are worried about them, because not meeting for a long time won’t do, so they also have some intersections in real life. In the process of writing, it’s impossible for them to really make any progress in real life, because they don’t know each other that you are the object of playing games with me every day, so everyone will think that there may be some drama in this part. Now I see the back and find that there is such a problem.

　　There is no contrast between liang chen and Lu Jing, but they grow together.

　　Sina Entertainment: Compared with Liang Chen, Lu Jing is a college student. Will the relationship between two people have a sense of disparity between feelings because of the disparity in status?

　　Xu Mengjia: Although there is a certain gap temporarily, I think the two people are evenly matched. First of all, in her career, Liang Chen is certainly needless to say. She is a successful female star with many awards. However, although Lu Jing is a student, he has also won many awards, and he is still a good student. He is also the first Asian champion, and now he is still trying to participate in various competitions and big data competitions. Therefore, Lu Jing’s future is actually not lost to Liang Chen, which is in his career.

　　Emotionally, I think these two people are independent personalities, and they don’t say that one party is completely obedient to the other. First of all, they all have clear plans for their own lives, their own careers and their own future. Two people belong to the common growth, even if there are problems, they will discuss with each other, run in with each other, and then reach an optimal and harmonious state, so I think the state of these two people is very equal and also a very good state.

　　Sina Entertainment: Apart from the setting of two schoolmates, what is the uniqueness between Lu Jing and liang chen, which is different from the love between male and female protagonists in other plays?

　　Xu Mengjia: First of all, they are different in identity. One is a student and the other is a singer. They are bound to encounter secular prejudice, for example, some people think that primary school students eat soft rice, etc. What we want to say is, don’t care too much and be too afraid of secular prejudice. Once you choose, you should pursue it bravely and fall in love bravely.

　　There are two people together, liang chen and Lu Jing are actually problematic, but don’t give up easily. We should communicate well, run in with each other and grow together.

　　Finally, don’t care too much about some external conditions. The essence of love is the attraction of the soul, so I think I hope that after watching it, the audience can stick to true love and don’t choose a relationship or enter a marriage just because it is suitable.

　　Sina Entertainment: In the process of watching the drama, do you think that Lin Yi performed your imaginary landscape?

　　Xu Mengjia: I think he is Lu Jing in my heart. He performed an unconventional schoolmaster. Lu Jing is very friendly to his roommate, the people around him, his neighbors and his friends. I think this is very similar to the feeling that Lin Yi himself gave me. Lu Jing is a very hard-working person, and I think Lin Yi is also a very serious person.

　　In fact, in the preparatory stage, I have already discovered that he is a very serious actor I have ever seen. He will often attend script meetings with us and give opinions. For example, Lin Yi thinks that maybe the Lu Jing written in our script is sometimes too pretentious. Unlike a college student, he will advise us to accept it. I think what he said is very reasonable, so we try to make Lu Jing change him to be more grounded, more like a college student, and not too pretentious.

　　We will talk with Lin Yi about his own understanding of Lu Jing. In the process of the actor’s own search and understanding of the role, Lin Yi did a very good job. The biggest surprise he gave me was actually kissing the scene. Lin Yi was really good at meeting relatives and acting very well.

　　Sina Entertainment: What do you think is higher than the script in liang chen performed by LULU?

　　Xu Mengjia: What surprises me about LULU is that her acting skills are very good. In the process of acting these romantic dramas, she will make me feel particularly substituted.

　　In the process of performing this role, she will give us something that is not written in the script. For example, she has her own thoughts on the career development of this role. In fact, I think there are still some places that are not quite like a female star in our script. But through LULU’s performance, I think this is what I want to show a female star in her life. She actually makes up for some shortcomings in the script.

　　Sina Entertainment: liang chen chose Lu Jing instead of Ding Jiayun. In the love between the year and the year, why are there more "love under the year" in recent years?

　　Xu Mengjia: First of all, I think sister-in-law love is different from the traditional idol drama, which is generally a mode in which men are older than women. It is a quite new theme, and the audience doesn’t watch it very much. At the same time, I think it also reflects the rise of women’s consciousness in society. Now the audience doesn’t particularly like to see women’s roles attached to men.

　　The audience’s ideas are similar to those we want to convey, that is, they strip off the external conditions of a man, such as his age, his income and his career. If you only look at him, his personality and his quality, will you still like him? What we want to convey is that you like his soul and his personality, not his external conditions. Under such circumstances,

　　There is something wrong with the rhythm. We have tried to restore the famous scene.

　　Sina Entertainment: How to convince the audience of the heroine’s identity background?

　　Xu Mengjia: We didn’t package liang chen as a "big star". liang chen is just a popular female singer. As a singer, she is still a little different from the current star. But I think LULU has actually performed the feeling of being a popular singer.

　　I think whether liang chen can become a popular singer depends on her own ability and strength, rather than focusing on things like hype and publicity. We want to shape her into an image that attaches great importance to her work and cares about her future career growth, and is also an image that dares to break through herself.

　　LULU performed particularly well in this respect. In the 26th episode, she had a match with Liu Yiqing. At that time, liang chen insisted on singing "The First Dance in Winter", but Liu Yiqing just felt that we couldn’t do it for the time being. Can you put it down for the time being and get through this competition before making a breakthrough in the future? But LULU, she played with tears in her eyes at that time. Just say that you have been following the arrangement of the company for so many years, but you have never thought about my feelings. Why did you join this program? I came to this program just to break through myself, otherwise why did I come? When I saw this scene, I was actually particularly moved.

　　Sina Entertainment: It’s almost the end of the show. Now let’s take a look at the creation of the whole drama. What do you think is the gain and loss of this drama?

　　Xu Mengjia: First of all, the biggest feature of this drama is sweet and funny. I think we have done it in this respect. Whether it is the leading role or the supporting role, the image of the role is vivid and can be remembered by the audience. I think this is what we have done. There is also the famous scenes and lines of the original, and we have tried our best to restore them. There are some problems. First of all, there are still some problems in the rhythm. Everyone says that there are too many passes, which feels like a routine. We admit that there is indeed a problem. There is also my feeling that we paved the line between Sun Binyu and Mashanshan too late. In fact, their scenes should be mentioned in the male and female two, and more scenes should be given to them in the early stage, which is also a problem that we will try to avoid in future works.

　　(Text/Meat English)

　　Today viewpoint

　　Aerospace gives people a special feeling of "high cold", which reminds them of advanced fighter planes and magnificent space stations that ordinary people can’t see, touch or use.

　　A few days ago, the well-known American website "GOBankingRates" took stock of 25 kinds of technologies originated from the National Aeronautics and Space Administration (NASA) in our daily life, which spread all over our "food, clothing, housing and transportation". They come from the distant sky, but they are convenient for our daily life.

　　Food: baby milk powder, freeze-dried fruit, food safety packaging.

　　At present, more than 90% of infant formula in the United States contains microalgae. It was originally the product of NASA research, the purpose of which was to test the potential use of algae as an oxygen "recycling agent" in space travel.

　　Freeze-dried fruit is a common snack. However, the purpose of NASA’s development of freeze-drying technology is to make the fruits in the Apollo mission easier to carry, and this technology can maintain 98% nutrition with 20% quality.

　　In order to ensure the safety and quality control method of space flight food development, NASA has now become a food industry standard to protect the food safety of consumers all over the world.

　　Life: memory foam mattress, scratch-resistant lenses, anti-ultraviolet sunglasses, cordless vacuum cleaner, Nike air-cushion sports shoes, space blankets, ski boots.

　　Comfortable memory foam mattress can fully fit the human body and relieve stress, which is necessary for many families. Memorable foam was not originally used to make mattresses. It was originally developed by NASA to cushion the impact of spacecraft landing on astronauts.

　　Compared with ordinary glass, scratch-resistant lenses have a longer life. In fact, the scratch-resistant coating is a "by-product" accidentally discovered by Jet Propulsion Laboratory (JPL) under NASA when researching the diamond hard coating for aerospace.

　　In 1980s, two scientists from JPL developed a kind of welding glasses, which can absorb, filter and scatter the strong light emitted during welding. Later, this technology was widely used in anti-ultraviolet sunglasses.

　　Initially, Black&Decker was ordered to develop a portable device for Apollo and Gemini missions, which was used to extract samples from below the surface of the moon. This technology has been improved to become a "cordless vacuum cleaner".

　　Nike air-cushioned sneakers use the patent of "Blow Rubber Molding" obtained by M. Frank Rudy, a former engineer of NASA. The initial application target of this technology is spacesuit.

　　The space blanket is insulated and heat-preserved, which is an essential item for survival in the wild and marathon. But it was originally developed by NASA to protect spacecraft and astronauts at low temperatures.

　　In addition, the technology used by NASA in the joints of spacesuits has been improved and used in ski boots, which improves the athletes’ control ability in skiing.

　　Home: swimming pool purification system, household heat insulation materials.

　　In order to resist the extremely low space temperature, NASA made an insulating material called "radiation barrier" from aluminized polyester. According to JPL, aluminized polyester is now used in most household insulation materials.

　　In 1960s, NASA developed an electrolytic silver iodide filter to provide clean drinking water for astronauts, and now it is widely used to purify swimming pools.

　　Travel: aircraft deicing system, precision GPS, anti-skid groove on highway, better tires.

　　According to NASA’s technology transfer plan, civil aircraft can fly in cold weather, mainly due to a thermoelectric deicing system called Thermawing developed by NASA.

　　Many mobile phones are equipped with precision GPS technology developed by JPL, and its data comes from JPL global GPS receiver network. Even if there is no wireless connection, you can still use GPS positioning on your mobile phone.

　　NASA’s Langley Research Center has developed anti-skid slot technology to prevent aircraft accidents on wet runways. Later, this technology was widely used in expressways.

　　In 1970s, Goodyear Company developed a new tire material for NASA Viking Mars probe, which was used in parachute system. This technology was later used to improve ordinary tires, increasing their life by 10,000 miles.

　　Electronic products: mobile phone camera, notebook computer, high-power solar cell, wireless headset, mouse, CAT scanner.

　　In the 1990s, NASA asked JPL scientists to make a miniature camera that can be installed on spacecraft while ensuring the quality of photography. According to JPL, one-third of mobile phone cameras now use this technology.

　　According to the Smithsonian National Air and Space Museum, "Grid Compass" is the first notebook computer in the world. It was first used in the space shuttle mission in 1983, which is one of the inventions of NASA.

　　The crystalline silicon solar cells used in the home originally came from the lightweight solar energy system developed by the Environmental Research Aircraft and Sensor Technology Alliance under NASA for electric aircraft.

　　NASA has developed wireless headphones for astronauts to facilitate their communication. Now this technology has entered thousands of households.

　　According to JPL, a NASA researcher developed a computer mouse in the 1960s, which allowed users to operate on the computer screen and made the computer more interactive.

　　JPL initially developed a CAT scanner to scan aerospace components to get advanced digital images to detect defects. Now, it has become a commonly used medical instrument.

　　Medical care: cochlear implant, invisible dental appliance, ear temperature thermometer.

　　Adam Kiser, an engineer at Kennedy Space Center, used his working experience in electronic, sound and vibration sensor systems in the space shuttle project to develop early cochlear implants by using electric pulses instead of sound amplification technology.

　　Compared with the traditional metal appliance, the invisible dental appliance is more beautiful. It is made of transparent polycrystalline alumina, which was originally developed by NASA to track heat-seeking missiles.

　　Nowadays, many parents use ear thermometer to measure the temperature of sick babies or young children. According to JPL, this thermometer adopts infrared dissection technology invented by NASA and Diatek.

　　There is always one of these 25 technologies that you have seen, touched and used. Aerospace technology can not only be used in high space, but also improve our quality of life after landing, which is one of the driving forces for human beings to explore and fly higher and farther.

　　(Science and Technology Daily, Beijing, July 8 th)

CCTV News (news broadcast):点击观看视频>>>

　　　　乒乓球是中国的“国球”，中国乒乓球队有着辉煌的历史，已获得16枚奥运金牌。胡锦涛来到乒乓球馆，了解国家女子乒乓球队训练情况。

胡锦涛来到乒乓球馆，了解国家女子乒乓球队训练情况。

　　　 张怡宁、王楠代表国家女子乒乓球队，向胡锦涛和习近平分别赠送了球队集体签名的乒乓球拍。

胡锦涛在球拍上签名，回赠给国家女子乒乓球队。

　　乒乓球台上银球飞动，队员们正在激烈对攻。胡锦涛兴致勃勃地在一旁观战。

　　一轮比赛结束后，运动员们围拢到领导同志身边。张怡宁、王楠代表国家女子乒乓球队，向胡锦涛和习近平分别赠送了球队集体签名的乒乓球拍。总书记高兴地接过球拍，笑着说，这个礼物很珍贵，我一定保存好！接着他又在另外3块球拍上签名，回赠给国家女子乒乓球队。得到这意外的礼物，队员们激动不已。

　　胡锦涛说，看到乒乓球队全体队员士气高涨、状态良好，我们感到十分高兴。希望你们发扬优良传统，坚持“从零开始”，加强针对性和实战性训练，在奥运会赛场上为祖国争得更多的荣誉。也希望你们与各国运动员多切磋、多交流，共同推动世界乒乓球运动发展。

　　临行前，胡锦涛对乒乓健儿们说，我等着你们的好消息！

责编：王超

On November 6th, Beijing time, let’s take a look at the European football situation yesterday morning.

1. Barcelona 2-0 almeria at home.

Levan missed a penalty, De Jong and Dembele each scored a goal, and Barcelona beat almeria 2-0 at home, winning four consecutive league games. Recently, Barcelona scored 10 goals in four league matches, but kept 0 goals.

After the game, 35-year-old Pique delivered a tearful farewell speech at Camp Nou, officially ending his 14-year career in Barcelona.

2, AC Milan home 2-1 spezia
Gill, 36, came off the bench in the 72nd minute and scored the winner in the 89th minute, helping AC Milan beat spezia 2-1 and scored the crucial 3 points, overtaking Atalanta and rising to the second place in Serie A..

Gill was sent off after taking off his clothes to celebrate the goal. It was his second yellow card in just seven minutes. He had just been warned by the referee for complaining too much.

3. Manchester City 2-1 Fulham at home

In the 95th minute, De Braune made a point, Harland hit a penalty kick, and 10-man Manchester City beat Fulham 2-1 at home. At first, they thought they were going to lose 2 points, but in the end, they got 3 points narrowly. Finally, they temporarily overtook Arsenal, who had one game less, by one point, and reached the top of the Premier League.

4, Bayern away 3-2 Hertha Berlin

Shu Bo-Mo Ting rang twice in two minutes. Bayern beat Hertha Berlin 3-2 away, winning 8 consecutive victories in all competitions and 4 consecutive victories in the Bundesliga, and temporarily surpassing Berlin by 2 points to reach the top position. In the last seven competitions, Shu Bo-Mo Ting scored nine goals for Bayern.

Bayern was chased by Hertha Berlin for 4 minutes with a 3-0 lead in the first half, but it was almost a draw by Hertha Berlin in the final stage of the second half.

5, Naples away 2-1 Atlanta

Osmain scored the winning goal, Elmas scored the winning goal, Napoli defeated Atalanta 2-1 away, won 9 consecutive victories in the league, and continued the unbeaten start of 13 rounds (11 wins and 2 draws), holding AC Milan at the top of the list by 6 points.

When it comes to exercise, many people are worried about hurting their knees.

So what kind of exercise hurts the knee the most?

The answer is

Sitting for a long time hurts your knees the most!

Long-term sedentary articular cartilage will gradually lose nutrition and "starve to death"

So exercise properly.

To prolong the life of the knee.

But the premise is to master scientific methods.

Avoid unnecessary damage.

Chen xingzuo

china japan friendship hospital

Deputy chief physician of orthopedics

Climb mountains and stairs

Risk of knee injury: ★★★★★★★

When going up the mountain (stairs), your knees will bear about three times your own weight.

When going down the mountain (stairs), the knee will not only bear the impact of the ground, but also increase the wear of the knee.

Therefore, it is not recommended to climb mountains and stairs as daily exercise.

Click on the picture below to see the correct posture of going up and down the stairs.

Key points of climbing without hurting knees:

The center of gravity is slightly forward when going up the mountain and slightly backward when going down the mountain.

Hold the railing to help or use the trekking pole.

Knee injury, good leg first when going upstairs, bad leg first when going downstairs.

Tip: Old people, overweight people and people with knee injuries are best to crawl less. Don’t insist on climbing if your knees are uncomfortable.

rope skipping

Risk of knee injury: ★★★☆☆☆

The risk of skipping rope to knee joint is mainly related to the venue.

Generally, the concrete floor downstairs in a residential area can’t provide an effective buffer for the impact force when skipping rope falls to the ground, and it is easy to hurt the knee for a long time.

Key points of skipping rope without hurting knees:

Choose plastic floor or cement floor to lay plastic mats.

When jumping, keep your feet close together to avoid bending your knees greatly.

The take-off height is 2 cm ~ 4 cm, so as to ensure that the skipping rope just passes through the soles of the feet.

Shake the rope with wrist strength and keep the big arm close to the torso.

jogging

Risk of knee injury: ★★☆☆☆

Jogging rarely causes knee injuries as long as it is not excessive.

A few people with obvious O-leg, X-leg deformity or knee joint disease and overweight should exercise reasonably according to the doctor’s advice.

Key points of running without hurting knees:

Warm up for 5-10 minutes before jogging, and run for 30-60 minutes every day, without paying too much attention to the distance.

Lean forward slightly, swing your arms naturally, and touch the ground with your forefoot.

Keep the speed "breathing, heartbeat is slightly faster but you can talk normally"

Plastic ground and asphalt road are selected for the site, and cement ground is not recommended.

Tip: Treadmill needs to be used with caution. If the setting is unreasonable and the speed is too fast, it is difficult for the average person to keep up with muscle strength and coordination after fatigue, but it is easy to get injured. In addition, the weight is too large, and the injured knee joint should be guided by a doctor.

At the same time, don’t be a "weekend hero" and suddenly go to exercise. Exercise should be gradual, gradually increase the amount, and the weekly increase should not exceed 10%. Don’t be a "weekend hero" and suddenly exercise.

a kind of traditional Chinese shadowboxing (tai chi chuan)

Risk of knee injury: ★★☆☆☆

Some people think that Tai Ji Chuan’s squats like "Ma Bu" will put too much pressure on his knees.

As a matter of fact, many scientific studies actually show that playing Tai Ji Chuan twice a week can not only protect the knee but also relieve psychological stress.

Key points of Tai Chi without hurting knees:

You need to warm up before playing Tai Ji Chuan.

Don’t squat too much in pursuit of beautiful movements.

You need to stand on one foot or rotate your body slowly.

Once knee discomfort occurs, don’t endure it and stop immediately.

Ride a bike

Risk of knee injury: ★★☆☆☆

When riding, people’s weight mainly presses on the seat cushion, and the force on the knees is relatively small, which also helps to strengthen the muscles around the joints.

However, if you ride too hard or take some wrong riding posture habits, it will also have certain health risks to your knees.

Key points of cycling without hurting knees:

Adjust the height of the seat to: when the foot steps on the lowest position, the knee joint slightly bends about 170.

Hold your head high while riding, keeping your knees and toes facing forward.

Keep riding at a constant speed, and don’t suddenly increase the speed by force.

Exert your thigh, and step on the pedal with the first third of the sole of your foot.

Tip: If there is obvious discomfort in front of the knee joint when riding a bicycle, it is necessary to minimize such activities.

Click on the picture below to see the details of riding a bike correctly.

swim

Risk of knee injury: ★☆☆☆☆☆

When swimming, the body is basically parallel to the water surface, and the knee joint is basically free of load, so it is best for the knee joint.

However, patients with knee injuries should avoid breaststroke as much as possible. Water resistance will impact the knee joint when breaststroke kicks, and long-term high-intensity breaststroke may aggravate the symptoms.

Tip: Freestyle and backstroke are more recommended to protect the knee joint.

Can knee pads help maintain your knees?

Many functional knee pads only sell a conceptual thing, and one thing that all functional knee pads do is actually heating. Keeping warm is a very important part of knee joint maintenance, because the joint itself is afraid of wet and cold.

Therefore, normal knee pads have two main functions.

1. Keep the knee warm

2. Increase the stability of joints.

If the functional kneepad is non-invasive to the knee joint, it is actually no problem to use. However, some people may be allergic to drugs for knee pads, so they need to be careful.

Knee pads used in osteoarthritis, the most important function is to keep warm;

The main function of knee pads used in traumatic arthritis is to provide extra stability for joints;

Primary synovitis and gouty arthritis may not be particularly important for the use of knee pads.

point out

1. Don’t rely too much on knee pads.

Long-term dependence will lead to muscle atrophy inside the joint, which is actually more unfavorable for the protection of the whole joint.

Especially for relatively young people, we must not rely too much on knee pads, but should make muscle strength stronger.

2, the temperature must not be too high, not too long.

3. Observe whether there is drug allergy in time.

4. Don’t wear too tight knee pads.

Too tight kneepads can easily lead to blood stasis, resulting in poor blood return, which may lead to thrombotic diseases of lower limbs, which may even be fatal.

Guide to the risk of knee injury in sports

Risk of knee injury by climbing mountains and stairs: ★★★★★★★

Risk of knee injury by skipping rope: ★★★☆☆☆

Risk of knee injury due to jogging: ★★☆☆☆

Risk of knee injury in Tai Ji Chuan: ★★☆☆☆.

Risk of knee injury by cycling: ★★☆☆☆

Risk of knee injury in swimming: ★☆☆☆☆☆

Source: CCTV life circle