Wu Ling, an antique shop owner, encountered a bronze compass chiming on the night of the Zhongyuan Dynasty, and the ancestral dragon bone judge pen actually attracted a blood poison corpse attack. As mobile haunted houses and living piles of feng shui emerged one after another, he discovered that he was actually the last "living nail" in the thousand-year dragon locking formation. There is a murderous intention hidden in the paper auction at the Xuanmen Night Banquet, and a rotten corpse with the same face as his is trapped in a locust tree cocoon in Fengdu Ghost City. When the scales of Jiuyin Zhulong emerged from Jiangcheng's terrestrial veins, Wu Lingcai was shocked to realize that his grandfather's death and his father's disappearance were all part of the life-and-death situation set up by the Five Meridians of Xuanmen in order to restart the ancient blood ritual - either he would use his body as a coffin to forever suppress Yin and Yang, or he would use his pen as a blade to tear apart this man-eating Feng Shui world.