The Campaign against Dong Zhuo was a punitive expedition initiated by a coalition of regional officials and warlords against the warlord Dong Zhuo in 190 in the late Eastern Han dynasty. The members of the coalition claimed that Dong had the intention of usurping the throne by holding Emperor Xian hostage and by establishing a strong influence in the imperial court. They justified their campaign as to remove Dong from power. The campaign led to the evacuation of the capital Luoyang and the shifting of the imperial court to Chang'an. It was a prelude to the end of the Han dynasty and, subsequently, the Three Kingdoms period.
In the 14th-century historical novel Romance of the Three Kingdoms, the campaign is memorable for at least two famous incidents: one is Guan Yu's slaying of Hua Xiong; the other is the three-on-one duel between the three sworn brothers (Liu Bei, Guan Yu, Zhang Fei) and Lü Bu. The two scenes are often reenacted in Chinese opera along with other famous scenes from the novel. Both incidents however, are fictional; Hua Xiong was captured and executed by Sun Jian after a brief battle. Liu, Guan and Zhang did participate in the campaign although their actions are not further described, with no mention that they dueled with Lü Bu, who, historically, was defeated by Sun Jian in battle.
