Jiang Nanfeng, a commoner, relied on his intelligence to repeatedly solve strange cases, but was accidentally involved in a major case. He was recruited by the court as a police officer and stumbled into officialdom. From the "grassroots" who turned around to solve the case, to the "iron-mouthed case" in the eyes of the people, he continued to grow with the help of his mentors and friends, solved a series of strange cases, and exposed the dark forces. In the face of power and morality, conspiracy and truth, Jiang Nanfeng is witty and humorous, fighting wits and courage with fate. In the intertwining of humor and danger, he eventually grows into the "voice of justice" for the people and the officialdom. The book is divided into four volumes to tell the story of his legendary journey from the market to the temple, from the people to the front of the church, and finally to protect justice and understand people's hearts.