Tang Dynasty: the Xuanwu Gate Changes at the Beginning

Li Chengxuan accidentally traveled to the day of the Xuanwu Gate Incident. He was Li Jiancheng's son, and Li Shimin would definitely not leave him alive. Being chased by Li Shimin, Li Chengxuan obtained the system. Qi Pa asked to rob the eldest grandson Wugou. At this time, it was important to escape. The remaining troops advised him to escape, so he resolutely robbed the eldest grandson Wugou. He received a super generous reward, 50,000 elite soldiers, food and grass, and the souls of various famous generals. They conquered Tuyuhun in the west, annexed Tubo, and pointed their sword at the Western Turks. Li Shimin of the Tang Dynasty couldn't believe it. Li Chengxuan, who occupied Tuyuhun, developed faster than him? The amount of food, grass, soldiers and horses was dozens of times higher than his. Li Shimin was extremely frightened. Is the Tang Dynasty going to change hands?