My Time and Space Paradox

Has anyone ever thought about whether time travel will be possible in the future? What should you do when someone claiming to be your future descendant appears in front of you? That's what happened to Han Fei. He was just an ordinary student, but when he went home one day, a young man appeared in his room and told him that it was him a thousand years later. What? Are you kidding me? Han Fei was so frightened that he called the police. According to what he claimed to be his future self, Han Fei had lived for a thousand years. There have always been aliens and monsters living around him on this earth. He came back to change the future. Han Fei called the police, but when he met his future self, his life had changed. Monsters, aliens, all these weird things appeared in front of him. His old life changed and a new life began. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.