He was enthroned in 744 at a time when the
Central Asian steppes were already conquered by the coalition of
Uighurs,
Basmyl and
Karluks. Chinese emperor
Xuanzong decided to destroy the last traces of the Turkic Khaganate and sent general Wang Zhongsi (王忠嗣) over to Kulun Beg’s forces. Meanwhile
Ashina Shi was deposed by
Kutlug I Bilge Khagan of the
Uyghur Khaganate. Wang Zhongsi defeated the eastern flank of Turkic army headed by Apa Tarkhan. Although Kulun Beg tried to escape, he was arrested by the Uighurs and was beheaded in 745. == References ==