Cage in the Mirror: Rules of Qinghuai Building 4

In order to find his sister Lin Xi who disappeared mysteriously six months ago, his brother Lin Yan broke into Building 4 of Qinghuai Community alone where rumors abounded and tenants disappeared one after another. A "Residence Safety Rules" filled with strange prohibitions became his only guide to survive. The knock on the door at night, the figure emerging in the mirror, the strange sound of fingernails scraping the door panel, layers of horrific appearances drove him into desperation, and every time he violated the rules, he was one step closer to death. Just when Lin Yan thought he was trapped in a supernatural story, an intercepted text message from his sister and a secret conversation outside the door completely revealed the truth: the so-called strange talk about rules was nothing but a carefully planned man-made conspiracy. The rules were traps, the mirror was a cage, and countless missing people had become victims of this conspiracy. Bearing the fate of his sister and the obsession to survive, Lin Yan tore apart the lies at every step of the murder, vowing to find out the mastermind behind the scenes, complete the redemption of his sister, and escape from this prison that eats people without spitting out bones.