Ashina Helu
The wars against the Western Turks continued under Emperor Gaozong, and the khaganate was annexed after General Su Dingfang's defeat of Qaghan Ashina Helu in 657. The Western Turks attempted to capture the Tarim Basin in 670 and 677, but were repelled by the Tang. The Second Turkic Empire defeated the fragmented Western Turks in 712, and absorbed the tribes into the new empire.