Time Travel Creed

Pure science fiction, no superpowers. An experience with friends many years ago unexpectedly caused one friend to disappear unexpectedly. Six years later, Liu Bai, who was a medical master, experienced the same thing again with three friends, but entered the world 120 years later through the time node tunnel opened in the future world. The virus is raging and the population is declining sharply, but here I heard that 120 years later, I was one of the founders of this future plan related to the survival of mankind. When the protagonist had a conversation spanning 120 years, a shocking lie was revealed. There are two main lines, one is the virus line, and the other is the time travel line. Just like what the male protagonist said: "People in the future cannot change the past, people in the past are writing the future." The entire story is narrated around this sentence. This novel is based on reality and fantasy, and is written based on existing human knowledge, combining the virus apocalypse and time travel. It is different from previous science fiction novels and focuses more on the description of human survival and time fantasy. There are no superpowers or abilities, there are no training stages or fantasy skills, there is only science fiction.