I, the Rules Designer, Specialize in All Kinds of Weird Things

Shen Ye moved into a ridiculously cheap apartment. On the first day he moved in, he found a note at the door with the apartment's "living rules" written on it. The rules seem absurd: you can't look in the mirror after ten o'clock in the evening, you can't open the door to strangers, you can't take a shower at three in the morning...