Who Owns the World in the Three Kingdoms?

Traveling through the Three Kingdoms, becoming Cao Cao's youngest clan brother, the Qilin'er of the Cao family, where should the protagonist go! "He is Cao Cao, the person I want to help the most. God owes him the world, and I want to return the world to him!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.