601 Rule

An unnumbered apartment building appeared in Dragon City. At midnight every night, an announcement will sound in the building: "Welcome, please abide by the rules." Zhao Du entered Room 601 by mistake and found that all the people living here were people who had been missing for many years - but they didn't know it. Rule 7: Don't look at your reflection in the mirror for more than ten seconds after midnight. Rule 12: If you hear someone knocking on the door claiming to be "collecting utility bills," no matter what he says, don't open the door. When Zhao Du discovered that these rules were not to protect the residents - but to protect the rules themselves, he could no longer get out.