Three years after Xie Yan's death, Bai Wuchang knelt in front of his grave and cried, "It's time for you to go back." ' He didn't know that he was already a living sacrifice in the chess game of Yin and Yang, and that the seducer who knelt down and begged him to return his soul actually hid a shocking conspiracy to tamper with life and death. When forensic doctor Shen Huai handed over the bloody autopsy report, Taoist priest Qin Jin lit the soul-inducing incense, and the ghost Mo Tong in the mirror whispered, "Three of the seven orifices are missing," Xie Yan realized that he did not die in an accident, but was selected as the key to opening the Huanyang Division. But are Bai Wuchang's tears regret or calculation?