During the Battle of Talas (named after the river) in 751, the Abbasid force defeated the Tang Chinese forces led by the General Gao Xianzhi over a dispute regarding a client kingdom in the Fergana Valley.
The battle was won by the Abbasids after the Karluks defected.

The Chinese monk Xuanzang arrived from the Chui river to Talas during one of his journeys.
During the Battle of Talas (named after the river) in 751, the Abbasid force defeated the Tang Chinese forces led by the General Gao Xianzhi over a dispute regarding a client kingdom in the Fergana Valley. The battle was won by the Abbasids after the Karluks defected.
The Chinese monk Xuanzang arrived from the Chui river to Talas during one of his journeys.
Talas River