In 2003, Yang Liwei heard a "knock on the door" in space. The answer was revealed 13 years later, thanks to his calmness at the time

As the countdown progressed, Yang Liwei calmly and resolutely saluted the camera. At 9:00 am on October 15, 2003, the Shenzhou-5 spacecraft successfully entered space, marking China's first manned space flight

As the countdown progressed, Yang Liwei calmly and resolutely saluted the camera. At 9:00 am on October 15, 2003, the Shenzhou-5 spacecraft successfully entered space, marking China's first manned space flight. Yang Liwei became the first Chinese man to fly into the universe.

Recalling his flight experience at that time, Yang Liwei recalled that when the cabin door closed and he heard the "launch" command through his headphones, he couldn't help but nervously grip the cabin. However, when the rocket soared, he felt good and adapted easily. His body gradually relaxed, and the weight bearing pressure was not as great as in regular training.

However, when the rocket rose to over 40 kilometers, the spacecraft and rocket resonated, which was a situation that Yang Liwei had never encountered before. This resonance made him feel very uncomfortable, and he felt like he could be shaken apart at any time. Faced with this unknown situation, Yang Liwei became nervous, but he immediately adjusted his state through psychological cues and carefully observed the data on the dashboard. After 26 seconds of resonance, the situation finally stabilized.

During the subsequent flight, he adjusted his state again and adapted to the special conditions of space. After the spacecraft entered orbit, he deeply felt the vastness of the universe and the beauty of the Earth. Looking out of the window, he could see the blue ocean, emerald green forests, and rolling mountains, which made him feel very friendly and proud.

During his flight in space, Yang Liwei also heard a mysterious "knocking" sound at the door. The sound surprised and confused him, and he couldn't find any abnormalities by observing the instruments and portholes. Although this sound has no regularity to follow, everything inside the spacecraft operates normally every time it appears. This problem troubled him for many years, until later research found that the sound was emitted by the small deformation of the inner wall material of the cabin in space.

In the end, the Shenzhou 5 successfully landed on the Amugulang Grassland in Siziwang Banner, Inner Mongolia, marking a national celebration in China. Yang Liwei's flight not only achieved great success, but also promoted the development of China's aerospace industry. The resonance problem has been solved, and aerospace researchers have thoroughly overcome the difficulties caused by resonance by improving the design of the spacecraft. After a long period of research and observation, researchers have discovered the source of the knocking sound, providing valuable experience and reference for future space missions.

Yang Liwei's flying experience not only sparked Chinese enthusiasm for the aerospace industry, but also attracted worldwide attention. China's aerospace industry is developing rapidly, and the pace of exploration and innovation is constantly accelerating. More and more countries hope to cooperate with China and carry Chinese spacecraft for space exploration. China has become an important force in the field of space.

Looking back at Yang Liwei's flight, we not only need to marvel at his calmness and courage as an astronaut, but also to see the serious research and problem-solving ability of the entire aerospace research team. They always maintain a sense of humility and awe, actively respond to challenges, and find answers through innovative thinking and scientific methods. This spirit is admirable and has laid a solid foundation for the success of China's aerospace industry.

In the future, Yang Liwei will continue to work with his comrades to strive for the brilliant future of China's aerospace industry. They will continue to pursue innovation and breakthroughs, making greater contributions to the peace and progress of humanity.China's aerospace industry will continue to develop and expand, further exploring the mysteries of the universe, and opening up broader space for the future of humanity.

The story of Yang Liwei is not only a story of an individual hero, but also a microcosm of the development of China's aerospace industry. It showcases China's strength and achievements in the fields of technology and innovation, and also conveys to the world the spirit of the Chinese people's courage to explore and pursue their dreams. As a great country, China will continue to demonstrate its capabilities and responsibilities in the field of aerospace, contributing to human progress and development.

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