An alternate history, called the last years of the "Dayou Dynasty". Chao Gang collapsed, demons appeared everywhere, and natural and man-made disasters continued. The imperial court has the "Qintian Supervisor" to suppress the national destiny, and the "Three Mountain Talismans" on the rivers and lakes lead the right path. But in addition to the orthodox Taoist sects, there are also "lower nine-stream" side sects among the people. Although they are not mainstream, they master mysterious and strange techniques.