In the ninth year of Yongchang's reign, a strange case occurred in Chenjing: Thirty-six members of the prime minister's family were killed without any injuries, leaving only a shallow sword mark on the beam.
Pei Zhao, the youngest military examiner of the Military Affairs Department, only glanced at it and said: "Qing Ming's Thirteen Styles: Gu Hong Izuyun, the sword wielder is left-handed - Master Qing Ming's right arm has been disabled for three years. Do you think he is the murderer?"
He has three principles for solving crimes: not looking at faces, not looking at confessions, and only looking at wounds. Because of wounds, never lie. But when half of the invisible copper coin fell into the palm of his hand, he realized that this case actually related to his old debt of being massacred when he was seven years old.
