Li Zhenzong, King of Jiangxia, is the cousin of Tang Gaozu, Tang Gaozu, and the cousin of Li Shimin, Emperor Taizong of Tang Dynasty, who is similar in age to Li Shimin. In his early years, he followed and defeated Liu Wuzhou and Wang, then destroyed Tuyuhun and East Turkistan, captured Khan alive, and together with Xue, settled Goguryeo, but the emperor didn't shoot it down three times.