During the Republic of China, the silver bracelet was stained with blood and killed people, the old locust tree had a childish soul with obsessions, and strange runes hid murderous intent on the ghostly objects. Chen Yan, a fallen craftsman of Yin objects, relied on his grandfather's "Account of Yin objects" and professional restoration skills to trace the truth between the Yang world and the thin world - when the mad ghosts broke through the order, when the Nian Nian sect slaughtered Yin objects in the name of "Wu Nian", and when the familiar outline of his uncle's bronze mask was revealed, he realized that behind the strange movement of Yin objects was a chaotic conspiracy that could swallow up Yin and Yang. Every artifact is a container of obsession, and every repair is a decision between reason and humanity. Can he gather the nine obsessions to guard the last line of defense of Bojie?
