Ata-Malik Juvayni
The Gurkhans administered limited territories, populated in 1170 by 84,500 families under direct rule. The Gurkhan's headquarters was called Khosun-ordu (lit. "Strong Ordu"), or Khoto ("House"). The Karluk capital was Kayalik. The Karakhanids continued to rule over Transoxania and western Xinjiang. The Kara-khitans did not interfere with the religion of the people, but Islam became less dominant as the other religions took advantage of the new freedom to increase the number of their adherents. The Nestorian Patriarch Elias III (1176–1190) founded a religious metropole in Kashgar. The Karakhitay metropolitan bore the title Metropolitan of Kashghar and Navakat, showing that the see of Kashghar also controlled the southern part of Zhetysu. The oldest Nestorian tombs in the Tokmak and Pishpek cemeteries go back to the epoch of Karakhitay domination. Ata-Malik Juvayni however stressed the oppression of Muslims by Kuchlug, a son of the last Nayman khan who was ousted (towards 1204) by Mongolia by Genghis Khan. The Nayman Nestorian Christian Küchlük usurped the throne of the Kara-Khitans. In 1211, a Mongol detachment under the command of Khubilai Noyon, one of Genghis Khan's generals, appeared in the northern part of Zhetysu. Arslan-khan Karluk killed the Karakhitay governor of Kayalik and proclaimed his loyalty to Genghis Khan. The Zhetysu, together with Eastern Turkestan, voluntarily surrendered to the Mongols. Kuchlug was killed by the invading Mongols in 1218.