Li Chengzong of the Tang Dynasty

In the fourth year of Wude in the Tang Dynasty, Li Chengzong, a technical geek, was depressed and began his sad and bumpy life in the Tang Dynasty. During the Xuanwu Gate Incident, Li Chengzong racked his brains to get rid of Li Shimin. The Turks came, and Li Chengzong tried his best to plot against Jieli Khan. When Tubo wanted to make peace with each other, Li Chengzong almost drowned Songtsan Gampo with his spit. Goryeo was unconvinced, and Li Chengzong claimed an army of 100 million to attack Goryeo. Li Chengzong just wanted to ask, where are the promised time-travel benefits? Why is my life in the Tang Dynasty so rough!