When Shenzhou VII leaves the capsule, he will display the national flag at all costs. Do you know how difficult it is to leave the capsule?

Zhai Zhigang's departure from the capsule created a milestone in China's space flight. Zhai Zhigang saw the stars under his feet, the blue earth floating overhead, and the sight of floating in space deeply shocked his heart. He said a familiar sentence: "I am out of the cabin and feel good." But at this moment, an extremely dangerous signal came, and the instrument suddenly sounded an alarm, and the Shenzhou VII orbital module caught fire! When Zhai Zhigang heard the alarm, he instantly felt his scalp tingling. However, the astronauts of Shenzhou VII have put life and death at risk, and their first thought is to finish the task anyway.

Continue the spacewalk mission. But in order to prevent accidents, the astronauts disrupted the original plan, and Zhai Zhigang took the lead in showing the world a five-star red flag. Zhai Zhigang and Liu Boming decided to let China's national flag fly in space even at the expense.

Chinese astronauts are ready for sacrifice. China astronauts Liu Boming and Tang Hongbo, dressed in a new generation of "Tian Fei" extravehicular spacesuits independently developed by China, have successfully left the Tianhe core module. This is also the time after the Shenzhou VII flight crew successfully completed the extravehicular mission. After a lapse of 13 years, China astronauts performed the extravehicular mission again. This time, the robotic arm of the space station cooperated with the astronauts for the first time.

After staying on the China Space Station for more than half a month, three astronauts of Shenzhou 12 carried out their first spacewalk mission. Nie Haisheng entered the Tianhe core cabin, and Liu Boming and Tang Hongbo successively left the cabin, and they spent about 7 hours in space. After successfully completing various tasks, they returned to the space station safely. In fact, this is not the first extravehicular activity of China astronauts. As early as 13 years ago, in 2008, the astronauts of Shenzhou VII carried out the first spacewalk mission in the history of China. However, Shenzhou VII's extravehicular mission was not smooth sailing, but experienced a thrilling process, and the astronauts were even ready for sacrifice.

Is to show the five-star red flag, which proves that we have been to the time when astronaut Liu Boming Shenzhou VII left the cabin. At that time, the hatch could not be opened. In desperation, Liu Boming found a metal stick and pried Zhai Zhigang's door open. When preparing to leave the cabin, the fire alarm sounded, and the three astronauts decided to change the procedure of leaving the cabin and fly the national flag first. Liu Boming recalled that he was ready to sacrifice at that time: "We just want to show the five-star red flag to prove that we have been here!" After the reverse propulsion engine of the Shenzhou 12 manned spacecraft was successfully ignited, it landed safely in the predetermined area of the Dongfeng landing site. Astronauts Nie Haisheng, Liu Boming and Yang Hongbo, after 90 days of space work, finally successfully completed their tasks and returned to the motherland.

Shenzhou VII successfully completed its mission, and they finally reached an agreement that they must leave the cabin first. If the fire alarm is lifted first, it is very likely that the orbital module will explode, and it will be difficult for them to complete the historic task entrusted to them by Shenzhou VII. They have to leave the module first, but hundreds of millions of people are watching them closely! So they decided to finish the extravehicular task first. According to the original procedure, they need to collect solid specimens in space first, and the second step is to display the national flag of China. In view of the grim situation, they made a temporary adjustment. After leaving the cabin, they first displayed the national flag of China to prove that China people had been here. This is the most sacred mission entrusted to them by Shenzhou VII, even at any cost. Then there is the shocking historical scene we saw. Zhai Zhigang waved the national flag of China after leaving the cabin, which made hundreds of millions of people in China cry. Fortunately, the fire alarm was a false alarm, and the Shenzhou VII mission was successfully completed.

The dedication of astronauts. Astronauts are very dedicated. In fact, what astronauts have to do is to put their own life safety last and put our country's space industry first. They represent the whole motherland and fly into space to experience weightlessness. Difficulties, liquidity problems, etc. However, they are not timid or discouraged, but have been firmly fulfilling the tasks entrusted by our motherland. This is a very persistent spirit that is willing to contribute to our society. In fact, they have to practice harder than others, because astronauts are a very physical test, so they have to go through many difficult trainings every day, but they persist. This persistent spirit and the spirit of not giving up in the face of difficulties are also very valuable. Therefore, in the end, they stand out and become astronauts, and they can't do without their efforts day and night. We really should learn from them.

Astronauts in China should adapt to weightlessness for a long time. The Shenzhou-12 manned spacecraft made by three heroic astronauts, Nie Haisheng, Liu Boming and Tang Hongbo, went into space from 9: 00 on June 20th to 6: 00 on September 20th, 2026. They have been working in a predetermined orbit 200 to 300 kilometers from the earth in space for 90 days. In this slow three-month period, China astronauts suddenly entered the weightless environment from a long-term adaptation to gravity, which will make a series of great changes in the physiological system of astronauts from body to heart. The symptoms caused by this change are called "spatial adaptation syndrome" in medicine.

Astronauts need to work many hours every day and live in space for a long time. The unique natural environment of the universe will lead to great changes in the body of every astronaut. Especially when people's bone tissue begins to become osteoporosis, it also has a certain impact on people's vision. In addition, the biggest impact on people's health is the changes of cardiovascular and cerebrovascular diseases and nervous system. The longer astronauts live in space, the greater these changes will be. However, the four astronauts on the American dragon spacecraft only stayed in space for four days, and their body systems did not change much during these four days, so they could walk on their own after returning to Earth.

How do astronauts live in space? China manned spacecraft are usually equipped with oral cleaners and finger pads for oral cleaning. Oral cleaners are usually chewed by astronauts after meals. Like chewing gum, it can achieve the purpose of cleaning the mouth. Oral cleaning finger cuff is a kind of gauze finger cuff, which is attached with a detergent that inhibits bacteria. It can be worn directly on your fingers and put into your mouth to wipe your teeth and massage your roots. Astronauts sweat more easily in space than on the ground, so it is necessary to clean their skin in space. Because water will fly after forming water droplets in weightlessness, it is not easy to wash your face and take a bath in space. Because of the short flight time and limited space, astronauts generally use relatively simple methods, such as scrubbing with dry towels or wet towels, or scrubbing both wet and dry.

The country will not mistreat their astronauts, and no matter how high the salary is, there may be envy. Because they are fighting with their lives. This kind of space flight, a little careless, will be in danger of sacrifice at any time. Such a huge rocket ship can't be built by a few people. Too many people make mistakes. As long as a person is not careful enough on a problem, it can lead to great disaster. In case of such a disaster, astronauts have nowhere to run. Seven astronauts, including female primary school teachers, the challenger of American imperialism, were swallowed up by smoke and fire just after they were launched in full view, and there were no bones left. Human beings have to pay a high cost or price to challenge space. The first price of life is the fresh life of astronauts. Therefore, for these human heroes, talking about wages may be blasphemy to them. We also believe that the country will not treat them badly.

Astronauts in China are strictly selected and positioned in the army. Just like soldiers on the frontier and coastal defense, they belong to a high-risk job and occupation, and some of them only have a little subsidy and allowance, but their ambition is not here. The first duty of a soldier is dedication, so it is enough to make China Aerospace bigger and stronger as soon as possible. This can be seen from their strict selection. Our astronauts are all selected from fighter pilots, not one in a thousand, at least one in a hundred. They were proud of their dedication to space, and finally won through layers of screening, and then were eliminated through training. Finally, they must be willing to act as backup. Do you think they are bitter?

Conclusion With their indomitable perseverance, adventurous spirit and self-care dedication, generations of China astronauts have led us to see a wider universe and a sea of stars. We would also like to thank these brave Chinese astronauts and pay high tribute to them. At the same time, it is also an astronaut from generation to generation, which enables us to cast our vision from the vast earth to the vast starry sky hundreds of millions of light years away. They are the greatest and most romantic people in the world.