The Xuanwu Gate Incident was a foregone conclusion to others, but to Li Chengqian, it was the coldest page in history that he had just finished reading. He died in a car accident and became the doomed prince of the Tang Dynasty. Looking at the young face in the bronze mirror, he smiled. The history books say that he "misbehaved, rebelled and was deposed"? That he lost to Li Tai and Li Zhi? Very good. Then he wanted to see what kind of crazy turn the Tang Dynasty, the Khan's fame, and the torrent of history would take when a soul that did not belong to this era took up residence in a body destined to tragedy. Since the position of the prince is destined to be the center of the storm, then he must be the hurricane at the helm. The pen of the historian is in his hands.