Chen Shuo, a fresh graduate, joined the "Chinese Abnormal Folklore Research and Preservation Department" (referred to as the "Polling Department"). He thought he was entering a nursing home, but found that his colleagues used a compass to determine the direction of a "mosaic" and used the "Book of Rites" to "reason" for a crying ceramic doll. He gradually understood that he had stepped into a Chinese-style Cthulhu world hidden under the modern city. Here, indescribable and abnormal things follow ancient taboos. Looking directly at them will drive you crazy, and understanding them will cause you to be contaminated. At the same time, the "Xu Heng" inherited in his blood also awakened...