Purchasing Agent in the Underworld: I Become the Night Watchman of Yin and Yang

At midnight, my purchasing app added a passage to the underworld. The person who placed the order was a ghost, and the person who made the payment was an underworld person. One order was worth half a year's salary to me. The only requirement: obey the rules, don't look back, don't talk too much. The first order: Freezer No. 3 In the funeral home, and a pack of cigarettes for free. Remuneration: 8888, deposited in seconds.