The Battle of Qingkou (清口之戰) was fought in 897 during the period of constant warfare in China that preceded the collapse of the Tang dynasty.
In the year 874, following major floods in which there was very little government response, mass rebellions occurred throughout Tang China.
Previously, he had served as a major officer under Huang Chao; however, he defected to the Tang and was given command of Xuanwu circuit.
This made him very popular with the Tang court so when Gao Pian, governor of Huainan, died in 887 Emperor Xizong granted Zhu Quanzhong control of the circuit.
Yang Xingmi's armies were inexperienced in land warfare, and so he welcomed the trained soldiers with open arms.
In late 897, Zhu sent a massive army numbering between 50 and 70 thousand men led by the general Pang Shigu[1] to capture Huainan's capital Yang prefecture, with Zhu and another general called Ge Congzhou also leading smaller armies to other parts of Yang's territory.