The Transoxiana Attack of Khan Kapagan           

        There was not any force that could resist to the Gok-Turks' armies in the Transoxiana, a place geographical position of which with its climate, and productive lands were praised very much in all sources. From 675, "the city kingdoms" commanded by some Turkish families, resisted successfully with the small forces spitefully to the commanders of Muslim Arabs (Abdullah b. Ziyad, Said b. Osman, Musa, Mühelleb etc.) by small attempts. Under the command of Tonyukuk again, the Gok-Turks' group of western forces that were led and administrated by "Khan Inal" and Bilge and that included also Kül Tegin who was 16-year-old that year, reached to the edges of Inci (Seyhun=Sirderya) passing through Altays-Borçlu-Plateau of Yariş-"the Gate of Tribes"-the regions of Çu and Talas- north of Karadağ, and by passing the river entered the Kizil-Kum, Transoxiana and directed to the south.

 

        A part of the army, for a possible attack from the sides, was remained under the command of Inal and Tonyukuk progressed and defeated firstly the army which was under the command of Sok, that was ready to the struggle in the south-east of Semerkand (701), obtained the slaves and spoils: "yellow gold, white silver, girl and child…" (Tonyukuk Inscription). At the same time, they had a victory against Chinese: Bilge and Kül Tegin defeated the Chinese general Ong-Tutuk (Wei Yuan-çung) in the region of "Idukbaşi". The general was commanding an army which included 50 thousands of soldiers with the Alti-çub (Chao-wu) tribe's aids in the east of the city of Keş. Kül Tegin who showed for the first time his bravery and warriorship in this war, took by himself the Chinese commander as prisoner. Thus, when Gok-Turks' army got rid of the obstacles, reached to Tarnir Kapig (Demir Kapi). This place, as it was known to be the natural border from Iran-Turan (Turks) from the B.C centuries.