The Troubled Times of the Time Traveler: Who Is the Protagonist?

I don't know what's going on? Travelers from various worlds were actually transported to the same troubled world. Some were at the peak of their martial arts realm, some were cultivating immortals and becoming gods, some were systematic at the beginning, and some were winning all the way... And so on. They are divided into various factions, such as Zhenwu Sect, Xiuxian Sect, System God, Laying Winner, etc. Factions are also strong and weak: from legend to legend, from god to immortal, from emperor to king, from strong to weak, from dishonest to useless. It can be said that everyone can be the protagonist here, but everyone can not be the protagonist. For decades, it never changed until he appeared... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.