World view: Under the shadow of the modern city, there is an inner world called the "Ruins Realm", which is composed of countless independent copies of ghost stories based on Chinese rules. During every lunar solar term and ominous time, ordinary people will be randomly drawn into it. The background of the copy is based on real folk customs: Xiangxi Corpse Exorcist Inn, Chaoshan Traveling God Taboo, Ghost Marriage in the Haunted House in the Capital, Ghost Bride in Jiangnan Water Town, Fairy Wilderness Temple in Northeast China, Minami Parade in Southern Fujian, etc. Each copy has independent survival rules. Violators will trigger different death endings. Only a handful of people can leave alive by breaking the core taboos. The protagonist, Lin Chen, comes from a declining folk legal family. He has been exposed to all kinds of taboos and side secrets since he was a child. He carries an ancestral book called "The Book of Hundreds of Taboos", which records a large number of folk methods to expel evil spirits, ward off evil spirits, and break problems, but every use has a price. Some of the other players encountered in the dungeon formed alliances, some plotted against each other, and some even tried to use modern logic to challenge the rules, only to die miserably. Su Cheng relied on judging good and bad luck, seeing yin energy, and understanding the rules of red and white events, and gradually discovered the truth behind the folk customs behind the dungeon, and discovered that the dungeon behind the ruins seemed to be related to an ancient sacrificial organization that had long been discontinued. In desperate survival games again and again, he kept slapping the elite players who laughed at his "feudal superstition", and eventually became the only "rule-abiding person" in all the dungeons who was feared by the devils.
