Chun of GojoseonChun was the last king of Gija Joseon. He was succeeded by Wiman, whose usurpation of the throne began the dynasty of Wiman Joseon of Gojoseon.Overthrowing and exile into Mahanentered Gojoseon as a refugee, and submitted to King Chun. Chun granted Wiman's request to serve as a commander of the western borders. However, sometime around 194 BC or 193 BC, Wiman led a revolt, and followed Chun down into Mahan territory, which was situated in the southern part of the Korean Peninsula.