Yuye Convenience Store: Code Is in Effect

Gu Xing, an unemployed accountant, hid in a convenience store on a rainy night to hide from his debt. The store manager said: Work the night shift to pay off your debt tonight. Only at dawn did he realize that the debt was cleared and he still owed the store ninety-nine rainy nights. Every rainy night, a new rule will appear in the "Employee Rules" on the wall, which takes effect literally - this store does not accept credit, do not touch things without price tags, and do not answer when customers call your name. Gu Xing is an accountant, and he can count every rule, every number, and every account - until he discovers that his name is written on the account book, along with the sentence "Substitute: Gu Xiao."