When Yong Xuan, a member of the You Zong family of Zong Ren Mansion, was repairing the imperial jade certificate, he discovered that the records of three generations of Prince Yu's "premature deaths" were too strange. Ling Hong'ao, an elder of the Three Dynasties, revealed the truth before his death: that was not a premature death, but a "Yi Zi". A dragon vein that was deliberately hidden, a taboo that spanned three dynasties, and a past that was erased by power. When Yong He was determined to investigate, he received a fatal warning of "Beware of the Zong Order".
