Old Street Abacus Shop: I Can Calculate All the Weird Things in the World

The protagonist takes root in the old streets of the old city, sets up a stall and opens a second-hand abacus shop, and comes into contact with the strange disasters that happen to ordinary people. Instead of writing about ancient tombs in the mountains, it focuses on the obsessions, grievances, and causes and effects of ordinary people at the bottom of the city; most of the causes of strange things are not evil ghosts harming people, but the greed of people.