The Veteran at the Beginning Said That I Was Rebellious.

This is a world where ghosts and humans coexist. Rich people can cure diseases and even gain long lives by making contracts with ghosts. The male protagonist is impoverished and is about to starve to death. He follows his father's will to dig his ancestors' graves. On the way, he encounters an old Taoist man named Niubi, who actually scolds me for being treasonous.