Tang_campaign_against_Karakhoja
Tang campaign against Karakhoja
Tang dynasty conquest
The Tang campaign against Karakhoja, known as Gaochang in Chinese sources, was a military campaign in 640 CE conducted by Emperor Taizong of the Tang dynasty against the Tarim Basin kingdom of Karakhoja, based in the city of Turfan in Xinjiang. The Western Turks provided their ally Karakhoja with soldiers, but the army retreated when the Tang forces arrived. Karakhoja surrendered and the kingdom was incorporated as a Tang prefecture.