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After Dong Zhuo was assassinated by Wang Yun and Lü Bu, his former generals—Li Jue, Guo Si, Zhang Ji, and Fan Chou—stationed in Shan County east of Chang’an, were on the verge of collapse. It was Jia Xu who advised them to unite and strike back, warning that surrender would mean certain death.
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In 192 AD, after Dong Zhuo’s brutal usurpation of the Han Dynasty had plunged the empire into chaos, Wang Yun conspired with Li Su, Shi Shunrui and Lü Bu to eliminate Dong Zhuo. Although previous assassination attempts against Dong Zhuo by others had all failed, this time Wang Yun and his accomplices succeeded.