During the prosperous period of the Tang Dynasty, under the bright surface of Chang'an City, there was an undercurrent. Pei Sansi, the secretary of Dali Temple, a ninth-grade official who loves studying files and is not good at socializing, was accidentally involved in a bizarre "bronze man claiming his life" case. The deceased was a minor official from the Ministry of Industry. His death was strange, as if he had been killed by one of the legendary Qin Shihuang's Twelve Golden Men. As the investigation deepened, Pei Sansi discovered that this was not an isolated case. The series of deaths pointed to a long-lost alchemy and a shocking conspiracy that could subvert the court. Facing the exclusion of his colleagues, the pressure of his boss, and the pursuit of the mastermind behind the scenes, Pei Sansi can only rely on his insight into the law and human nature to find the truth among the clues. What he wants to investigate is not ghosts, but human hearts. When he peeled away the fog layer by layer, the final truth made him shudder - who is a human and who is a ghost in Chang'an City?
