Tan Zaozao entered her third door.Ling Jiushi discovered that Mengmeng's room number had changed to 502 - the room where the nurse committed suicide. Ruan Lanzhu concluded that it had been secretly changed and saved Mengmeng once.
At night, the nurse found room 502 and committed suicide by jumping off the building over and over again.Jiang Yingrui gave Ruan Lanzhu a pack of biscuits. Ruan Lanzhu realized that he was being targeted and could only hurry up to find the tunnel of the nursing home. The door was probably there.