仇士良
Immediately after the dissipation of the Huigu threat, however, Emperor Wuzong faced a crisis of a different kind. In 843, Liu Congjian the military governor ("Jiedushi") of Zhaoyi Circuit (昭義, headquartered in modern Changzhi, Shanxi), who had governed Zhaoyi in "de facto" independence from the imperial government and who had a strident rivalry with Qiu Shiliang, was seriously ill, and Liu wanted his adoptive son (and biological nephew) Liu Zhen to succeed him, and set up the power structure at the circuit to facilitate the transition. He submitted petitions requesting that Liu Zhen be allowed to take over the circuit. When Liu Congjian thereafter died, Liu Zhen sought to inherit the circuit. Li Deyu, believing that this would be a prime opportunity for the imperial government to seize control of Zhaoyi Circuit, advocated a campaign against Liu Zhen, and Emperor Wuzong agreed.