Midnight Watch Notes

Lin Ye, 24 years old, had been unemployed for half a year and was in arrears with rent. He was desperate and found this night shift part-time job. The salary is ridiculously high, but the requirements are strange: we only recruit adults who live alone, have no ties to relatives and friends, and have chaotic schedules. They are not allowed to take mobile phones outside, open windows late at night, respond to calls in the corridor, and look through the black leather books at the bottom of the duty cabinet...