I'm a Prisoner in a Demon Prison

Traveling back to the Chu Dynasty, the world is difficult and full of demons. On the surface, the world is peaceful, but in fact, there are undercurrents. The protagonist is the leader of a demon prison. He awakens a book of mysterious spirits and picks up the demon's spiritual medium to plunder his ways and refine his magical powers. No matter how thick and thick your hair is, you are a century-old monster, but in my hands, you are nothing but fish. What, the county magistrate's son wants to challenge me? I really didn't hook up with his wife!