Ashina Helu
The factions quarreled and the Nushibi and Emperor Taizong of Tang enthroned Irbis Seguy (642-51). The Chinese demanded part of the Tarim Basin and then seized part of it until the war ended with Taizong's death. Irbis was overthrown by (Ashina Helu) Ishbara Qaghan (651-58) who, after about six years of war, was defeated at Battle of Irtysh River and captured by the Chinese. After this there were several puppet Khagans. In 679-719 the old Gokturk capital of Suyab was one of the Four Garrisons of Anxi. The Chinese remained in the area until the time of An Lushan's rebellion (756).