Survival Rules for the Post-Century

In the latter century, the sky is gray, the air smells of blood, and the depression and fear of death occupy people's hearts... Lin Yao miraculously survived for five years in the game "Post-Century" with maximum realism. But he never dreamed that the "post-century" would come true and be perfectly integrated in the world where he has lived for 19 years. In other words, he accidentally entered this game... Intention: None