From Another World of Metaphysicians

My name is Duan Jiude, I am twenty-eight years old. Others raise ghosts to improve their luck and make money, but I raise ghosts so that they can work and pay off debts - after all, there is inflation in the underworld, and ghosts have to make some extra money. As for the Yinmen key that Third Master wants... Oh, I made it into a keychain, it looks pretty good. Until the third master's people came to the door and said that collecting four keys could open the door to the underworld. I looked at the three coins I had gathered in my hand, and then at Li Jun, who was lying in the ICU, and the daughter of the Zheng family, whose father had just died. "Open the door?" I played with my thumb and grinned. "Okay." "But the rules for opening the door must be according to mine."