Xue Rengui (simplified Chinese: 薛仁贵; traditional Chinese: 薛仁貴; pinyin: Xuē Rén'guì; Wade–Giles: Hsüeh Jengui) (614–683), formal name Xue Li (薛禮) but went by the courtesy name of Rengui, was one of the most famous Chinese generals during the early Tang Dynasty, due to references to him in popular literature. During his career, he participated in successful campaigns against remnants of Western Tujue and against Goguryeo, with only one major flaw on his record which was an unsuccessful campaign against Tufan in 670, where another General in his army refused to listen to Xue's advice and charged ahead and caused the majority of the army to be lost.
Read more about Xue Rengui: During Emperor Taizong's Reign, During Emperor Gaozong's Reign, In Fiction, Popular Culture