Actually, the second season and the third season were filmed together. The third season 12 episode was split from the second season. It is said that the second season is not allowed to air, so the last episode of the second season is used to deal with the Radio and Television Bureau. Because you have to pass the audit of the Radio and Television Bureau, there can be no ghosts, so the last episode tells you that all this is just a novel written by a psychologist.