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Wi Man

Wi Man was a military officer of the Yan of northeastern China who fled to the northern Korean peninsula in 195 BCE from the encroaching Han dynasty. He founded a principality with Wanggeom-seong as its capital, which is thought to be in the region of present-day Pyongyang. The 3rd-century Chinese text Weilüe of the Sanguozhi recorded that Wi Man usurped King Jun and thus took over the kingship of Gojoseon.