Why Is My Ancestor a Dog?

The Ancestral Sword Appears in the World and Hundreds of Ghosts Walk at Night Do Not Disturb Bulls, Ghosts, and Snakes. Shen Mo, who is pure and fatherless, lives a shabby and simple life in order to make a living and study, until he begins to encounter bizarre events on his birthday. A rich school beauty who can tell fortunes and asks to be taken care of, a giant monster, and a dog that claims to be Shen Mo's ancestor? ! How should he face a sudden accident if he doesn't believe in evil?