Junjie who is a chef and restaurant owner too, recounted his experience when working and living in a dormitory that had a triangular design and faced a cemetery. He learned from a previous occupant that the room had a history of strange occurrences, such as someone knocking on the door at night with no one there. During the Chinese New Year period, when Junjie's colleagues stayed in his room, they heard the sound of marbles dropping at midnight...