 Their territory covered the region of the Ferghana Valley and the area between the Amu Darya and Syr Darya rivers, with the core territory along the middle Syr Darya.Since historians of Alexander the Great do not mention the existence of any political power in the area except the Khwarezmians, the Kangju must have appeared a little later.It is likely that the state of the Kangju emerged during the great upheaval in Central Asia following the withdrawal of the Yuezhi from Gansu and then the Ili Valley after their defeat by the Xiongnu and Wusun respectively.