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In the Hexi Corridor of western Gansu, the Later Liang splintered into the Northern Liang and Southern Liang in 397. The Southern Liang was founded by Tufa Wugu, a Xianbei, in Ledu, Qinghai. The Northern Liang was founded by an ethnic Chinese, Duan Ye in Zhangye, Gansu with the support of Juqu Mengxun, a Xiongnu, who then seized control of the kingdom in 401. In 405, Li Gao, the Chinese commander at Dunhuang broke away from the Northern Liang and founded the short-lived Western Liang. The Western Liang was reabsorbed by the Northern Liang in 421. Li Gao's descendants would go on to found the Tang Dynasty in the 7th century. The Southern Liang was conquered by the Western Qin in 414, and the Northern Liang lasted until 439, when it surrendered to the Northern Wei.