Lan Han was an official and a consort kin of the Xianbei-led Chinese Later Yan dynasty, who killed the emperor Murong Bao in 398 and briefly usurped the throne before being killed by Murong Bao's son Murong Sheng.
10 Facts About Lan Han
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Lan Han was an uncle of Murong Bao's father Murong Chui, the founding emperor of Later Yan, as a younger brother of his mother Consort Lan, and in 384 he assisted Murong Chui's son Murong Nong in starting a rebellion against the Former Qin dynasty to assist Murong Chui's main rebellion.
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In spring 398, after a rebellion by the general Duan Sugu had Murong Bao sieged behind the walls of Longcheng, Lan Han was described as having the title of Prince of Dunqiu and commanding an army near the city, but secretly aligned with Duan.
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Less than a month later Lan ambushed Duan and took over Longcheng and temporarily installed Murong Bao's crown prince Murong Ce as leader while sending messengers to try to welcome Murong Bao back to Longcheng.
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Lan Han resumed sacrifices to Later Yan ancestral temples to show that he was still faithful to the Later Yan state.
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Lan Han then killed Murong Ce and a number of other Murong princes as well and declared himself Grand Chanyu and the Prince of Changli.
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Lan Han changed era name to "Qinglong", signifying that he was declaring a new state.
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Lan Han spared Murong Qi the Prince of Taiyuan, whose mother was a daughter of Lan Han.
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Further, at this time, because of a severe drought, Lan Han went to pray to the Later Yan ancestral temples and Murong Bao's spirit, blaming Murong Bao's murder on Lan Jia'nan.
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Soon thereafter, after Lan Mu had won a victory over Lan Ti and Lan Jia'nan, Lan Han held a feast for the soldiers, at which both he and Lan Mu became extremely drunk.