Is there a doomsday novel that talks about the classification of humans, with the highest level being 30?

😋I recommend the fantasy novel, You're already Level 10,000, the highest level outside is Level 30, to you. The main character of the novel, Ye Mu, transmigrated to the emperor's corpse. Through signing in the coffin, he obtained cultivation and various divine items, becoming a level 10,000 invincible warrior. In a world where the highest level of humans was only 30, what kind of adventures and challenges would he experience? I hope you like this fairy's recommendation. Muah ~😗