Knowledge of his hold over Central Asia is less well established. The Book of the Later Han, "Hou Hanshu", states that general Ban Chao fought battles near Khotan with a Kushan army of 70,000 men led by an otherwise unknown Kushan viceroy named Xie () in 90 AD. Ban Chao claimed to be victorious, forcing the Kushans to retreat by use of a scorched-earth policy. The territories of Kashgar, Khotan and Yarkand were Chinese dependencies in the Tarim Basin, modern Xinjiang. Several coins of Kanishka have been found in the Tarim Basin.