Claim: Yueban was further identified with the Altï Čub Soğdak "Six Prefectures' Sogdians" by Gumilyov. The Altï Čub Soğdak was also mentioned in Kul Tegin inscription as enemies of the Second Turkic Khaganate.
Evidence: Gumilyov further identified Yueban with the Altï Čub Soğdak "Six Prefectures' Sogdians". Meanwhile, Sergey Klyashtorny identified the Altï Čub Soğdak with the Sogdian-populated "Six Barbarian Prefectures" (六胡州 Liùhúzhōu) of Lu 魯, Li 麗, Han 含 (or She 舍), Sai 塞, Yi 依, and Qi 契, established by Tang Chinese in 679 from "surrendered Turks" (降突厥), "originally a Sogdian people who had submitted collectively to the Eastern Turks" Later on, Altï Čub Soğdak were mentioned in Kul Tegin inscription as enemies of the Second Turkic Khaganate, and they were conquered by Bilge Khagan in 701.