Lu Zhao, a modern emergency management cadre and history enthusiast, time-traveled into the seriously injured and comatose King Li Shimin of Qin on the night of the Xuanwu Gate Incident. Faced with the blood-stained East Palace, the Gaozu who may overturn at any time, the Turks who are about to attack the Weishui River, and a group of famous Zhenguan officials who can distract him, he must first sit on the throne alive, and then use his organizational skills beyond the times to reshape the Tang Dynasty; but every time he changes a period of history, he is also losing the advantage of a "prophet" step by step, and must answer: Can a good emperor become a real person without killing?