Coffin Town and All Mysteries: Anecdotal Records of Wumingzhai

My name is Shen Qingwu, and I inherited a coffin shop that was about to close down. I thought life would be like this, until that day—— I sold a locust wood coffin, and the next day the client's family died violently, but there was a paper man wearing a shroud lying in the coffin. Written in blood on the palm of the paper mannequin: "You are next." Only then did I realize that the three rules passed down from my family are very important: 1. The deceased will not be sold in an ordinary coffin - a curse to suppress evil spirits must be engraved, otherwise the soul will return in seven days. 2. From now on, we will only accept "non-human" guests - exchange memories, hair or promises for coffins. 3. The seventh coffin will never be opened - because it contains myself who died three years ago.