I recommend you a novel about Revisions + City + Underworld. It's the "Unserious Revisions of the Heavens" mentioned earlier by Drunken Old Cat. Lu Li, the main character, was entrusted with an important task by Fungus of Earth. He was a lazy person who had to rely on merit points to level up. However, he was the guardian of Earth who had fought to the end in the final battle of Chaos. There were also some underworld elements in this novel. I hope you like this fairy's recommendation. Muah ~😗