Earlier, Yang Liwei said in an interview that he heard strange knocking in space, as if someone had knocked on you again. However, so far, the source of this sound has not been understood. There are also many netizens on the Internet who say that Yang Liwei saw people and even believed that the knocking was the visit of extraterrestrials. But even if Yang Liwei saw aliens, he wouldn't reveal it.
There is a rumor that Yang Liwei saw aliens and was knocked on by them. Later, it was said that Yang Liwei's face was covered in blood when he left the cabin because he was attacked by aliens. But all of these are just speculations. We can only guess because our understanding of space is too limited.
In an interview after returning from space, Yang Liwei said he heard a strange sound. It wasn't a scream or a wooden hammer. He said it wasn't an outside sound or a ship sound, it was like someone knocking on the ship from the outside. He was nervous and worried that there was something wrong with the spacecraft, but every time he heard the noise, he lay at the door and saw nothing. This caused intense debate, with some even believing that Yang Liwei saw aliens, but there are still many other possibilities.
According to data from NASA, there are over 4,000 abandoned man-made objects and rocket bodies in Earth's orbit, and about 6,000 pieces of space debris that can be seen and tracked. Most of these are moving at high speeds. Objects in orbit pose a serious threat to spacecraft. Spaceships can collide with each other when traveling around the Earth. So the knocking sound that Yang Liwei heard may have been the sound of a spacecraft.
Regarding the curiosity and mystery of the universe, we believed that aliens and the knocking sound were linked to the existence of aliens. Although humans have sent out many signals into space, the existence of aliens has not been discovered for a long time. So far, there is no strong evidence to prove the existence of aliens. It is said on the Internet that Yang Liwei's sighting of aliens was just a rumor.
Later, Yang Liwei explained it himself. He said that when the project structure or pressure changes, noise may be normal. He also said that the sound heard by astronauts during spaceflight helps them communicate in detail with researchers after returning to Earth.
Yang Liwei said, "My nerves were tested by the intense flashes during the spacecraft's flight. The ship came out of the telemetry area and entered a brief night. I was sitting in my seat and suddenly saw a shining light outside the window. I was surprised and thought, 'Wow, why is it so bright?'"
Looking out from the portal, I noticed that the flashing light was gone. I wondered if there was any problem with the spacecraft. Quickly, I returned to the dashboard and checked all the data and systems of the spacecraft. So when the spacecraft entered the shadow again (equivalent to night), I was waiting on the porch early to see if a similar situation would happen, but the flashing light did not appear.
If you encounter an emergency in space, you will feel nervous. But I knew why you had to find the cause first! So I tried to search the data on the spacecraft dashboard again to see if there was any problem. He lay on the porthole and looked closely at the surface of the ship, even inspecting the rivets, trying to think about what would bring light.
Before my third entry into the darkness, I lay in the window, waiting for a beam of light on the ground to illuminate and disappear in the dark. I immediately knew it was lightning on the ground.