You mean the characters in the TV series Xue Pinggui. That's Li Daozong. Li Daozong is the king of Jiangxia in history. Li Daozong is Li Shimin's cousin. He is very talented and has made great contributions (such as Tuyuhun and Koryo), but he is greedy. Li Daozong in history is not as obscene as TV plays and novels. After Li Shimin's death, when Tang Gaozong was in office, he was exiled for being involved in a sex case. Sun Chang Wuji and Chu Suiliang have been at odds with Li Daozong, framing Li Daozong for colluding with Fang, so Li Daozong was assigned to Xiangzhou. Died on the road at the age of 54. Later, Sun Chang Wuji and Chu Suiliang fell one after another, and Emperor Gaozong was restored to his official position.