Tian Jun
In 883, Huang Chao, under attack from a group of Tang generals led by Li Keyong, was forced to abandon Chang'an and flee east. He had his general Meng Kai () attack Cai Prefecture. Qin Zongquan engaged Meng but was defeated, and reacted by opening the city gates and submitting to Huang. He thereafter joined his forces to Huang's. They put Chen Prefecture (陳州, in modern Zhoukou, Henan) under siege, but were unable to capture it due to the defense by Chen's prefect Zhao Chou. In winter 883, when Huang was still sieging Chen, Qin himself put Xu Prefecture under siege, but was also unable to capture it. In spring 884, he also sent one of his younger brothers to attack Lu Prefecture (廬州, in modern Hefei, Anhui), and occupied Shucheng (舒城, in modern Lu'an, Anhui) for some time, before the prefect of Lu, Yang Xingmin, sent his officer Tian Jun to expel Qin Zongquan's brother.