 at the Irtysh headwaters in the 7th century; meanwhile, Vladimir Tishin compared 咽麫 "Yànmiàn" (< LMC *"ʔjianˊ-mjianˋ" < EMC *"ʔɛnH-mjianH" < *"Emän") to the names of the Chumukun's "town of Yan" (咽城) and the Emel River.Gumilyov 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.