On the surface, the Dayuan Dynasty was a powerful empire ruled by mortals, but in reality, there were undercurrents and evil spirits lurking. The royal family relies on the domineering true dragon spirit to suppress the destiny of the country. The concubines in the harem will do anything to win favors and heirs, and even secretly feed evil spirits and collude with heretics. The Dayuan court has an official organization called the "Zhenling Division" that specializes in dealing with supernatural events and evil spirits. This world is subject to strict laws of heaven, and foreign high-level monks will be greatly suppressed in their cultivation and warned by thunder.