Midnight Yin Yang Shop

On the day my grandfather died, the lawyer sent me a shop and a letter. The letter said: The store doesn't have to accept it, but the debt must be repaid. After the third watch, if someone knocks on the door, first ask if the person is a human or a ghost. I originally wanted to sell it outright. As a result, the first person who came to the door was my childhood friend who drowned ten years ago. He asked me: Brother, how have you been doing these years? Later I learned that this shop had been run for seven generations, and each generation failed to live beyond the age of forty. Every time a case is solved, something will be deducted from the life expectancy, luck, and fate of the people around you. But there are some things in this world that have to be done by someone. My name is Zhou Buping, and I am the last Mr. Yin Yang in the town.