In the twenty-third year of Kaiyuan, strange cases of nobles suddenly dying suddenly occurred in Chang'an one after another, and strange blue spots appeared on the bodies. Modern forensic doctor Shen Yuqiao cut open the throat of the deceased and discovered a poisonous poison from the Western Regions that had been lost for centuries. The bloody spell pointed to the depths of the Daming Palace. When the female county magistrate Li Yanfei pressed his sword against her neck, she didn't know that this bold medical woman was staring at her earlobe - there was a pearl button only used by women...
