I Am in the Prehistoric System

Came to the primeval world out of nowhere? What should I do? Ding--The Wanjie System is online! Can a realm get a system? Then I just want to say that the protagonists in all the worlds are scum! Hongjun: Hiss, the son of Dao is so terrifying! Sanqing: I have a disciple who can conquer all races! Many systems: Wow! This coquettish bitch host is a real bitch! Chen Tian: Want to travel across all realms? Want a system? Or maybe there is a handsome old man and a beautiful old woman in a ring? It doesn't matter, come on, I'll take you across all realms~