窦建德
Liu Heita () (died 623) was an agrarian rebel leader during China's transition period from Sui Dynasty to Tang Dynasty, who initially successively served under Hao Xiaode (), Li Mi, and Wang Shichong. He eventually followed Dou Jiande the Prince of Xia. After Dou was killed by Emperor Gaozu of Tang in 621 and his territory was taken by Tang, Liu rose to avenge Dou, and briefly recaptured Dou's territory, north of the Yellow River. He was then defeated, first by the Tang general Li Shimin (the eventual Emperor Taizong) and then Li Shimin's brother Li Jiancheng the Crown Prince, and in 623, he was captured by his one-time subordinate Zhuge Dewei () and executed.