On a rainy night when the alchemy furnace exploded, Wudang's abandoned disciple Chen Changsheng used blood as a guide to refine the Taoist forbidden code "Blood Dragon Devouring the Sky". When the Nine Revolutions Blood Pill burned through the palm of his hand, he glimpsed an even more horrifying secret - the Taotie Demon Pattern under Master Xuan Zhenzi's Taoist robe actually had the same origin as the Kangjin Dragon Shadow in his own bloodline. The seven-star soul-eating nails penetrated the clouds, and the devil's white bone claws tore through the earth's veins. The master and apprentice, who had been fighting for ten years, finally discovered that the Dantian locked by the heart-eating Gu, the armillary sphere suppressed by gouging out bones, and the rusty Zhige sword were all closed loops of cause and effect as sacrifices to each other.