After transmigrating into the Tang capital of Chang’an as a low-ranking clerk in a government office, Wei Qian just wants to lie flat and coast. Then one day, a hundred cavalrymen of the Imperial City Bureau raid the Western Market and trample a child to death in the street. No one dares to intervene. Wei Qian steps in front of their horses and shouts, “Stop! Under the Great Zhou Code, riding recklessly through a crowded market without cause carries a penalty of eighty strokes!” [He has activated the Urban Management Law Enforcement System.] Ten principles for upholding justice: ignore the powerful, and within the bounds of your authority, even princes and nobles can be executed! [And so the toughest urban enforcer in the Tang dynasty is born.] The Five Great Clans and Seven Noble Houses are selling illegal salt? Seize their estates! A powerful minister embezzled funds for canal repairs? Investigate him! Human traffickers are abducting women and children? Beat them to death in the street! I don’t care if you’re a noble or a prince. Within my jurisdiction, you obey the law. As titles keep piling up, from deputy inspector of the Secret Police to military supervisor of both markets, Left Street Commissioner, and junior prefect of Jingzhao, Li Shimin panics: “Don’t let him get promoted again! At this rate, he’ll investigate my throne next!”