In the second year of Tianshou, Shen Yanzhi, a forensic intern who graduated from the police academy, traveled back to the Wu Zetian period due to an archaeological accident and became a trainee at Dali Temple. He relied on modern forensic knowledge and historical insight to assist Di Renjie in solving the serial mysteries. From the counterfeit currency scandal in Chang'an West Market to the mysterious corpse hidden in the bronze bell of Jinci Temple, the case implicated Lingnan salt merchants, Zoroastrian esotericism and even the treasonous conspiracy of Wu Zetian's nephew Wu Chengsi. When modern criminal investigation technology meets the judicial system of the Tang Dynasty, and when the secret of the time traveler encounters the suspicion of the imperial power, Shen Yanzhi struggles to survive in the torrent of history, not only to uncover the truth of the case, but also to protect the order of time and space. The whole series is connected by unit cases such as the "Bronze Bell Case", "Maze Case" and "Golden Case", showing the style of the prosperous Tang Dynasty and the secret struggle of officialdom, and exploring the eternal propositions of justice, machinations and human nature.
