In Order to Save the Earth, I Had to Choose to Become an Immortal

In 2022, aliens invaded the earth, and humans launched a desperate struggle with them. In the end, humans used forbidden weapons to barely drive them away, but the earth's environment is no longer suitable for human habitation, and what humans desperately tried to drive away was just the advance force of the alien race. The follow-up army of the alien race will arrive on the earth two thousand years later. In order to protect themselves, humans launched the "Ark Project". They were preparing to find a new home, but some people were still reluctant to leave their homeland. They chose to freeze themselves for two thousand years. They wanted to fight the coming alien races. Our protagonist Ling Feng was one of them, but he woke up a hundred years early... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.