100 Days of Survival

When I woke up, I arrived in a primeval forest. A system voice came to my ears: "System initialization completed" "Welcome to the primitive forest" Turning around and looking around, there was nothing. The sound in my ears continues! Liu Wei pricked up his ears and listened carefully, but the sound disappeared, leaving only these few words. "Please reach the primitive city within a hundred days, or die" "The black tide has started, be swallowed by the black tide, die"