Li Keyong
In spring 882, Li Keyong attacked Yu Prefecture. Qibi then requested imperial sanction and the cooperations of Datong and Tiande (天德, headquartered in modern Bayan Nur, Inner Mongolia) Circuits in operations against him. Emperor Xizong ordered Zheng to coordinate with Qibi. Meanwhile, Helian Duo and Li Keju engaged Li Keyong, but could not defeat him. Li Keyong also continued to pillage Hedong. Emperor Xizong had Wang Chucun the military governor of Yiwu Circuit (義武, headquartered in modern Baoding, Hebei), who was friendly with Li Keyong, write Li Keyong, informing him of imperial displeasure and suggesting that he cease his pillages and return to Shuo Prefecture.