 Hyeomdokhyeon is currently located in Changli (昌黎) County of Hebei Province in the modern People's Republic of China.According to "Joseon Sangosa", the "Gi" family became the kings of Beonjoseon in 323 BC, and the central authority of the Vice-Dangun became very powerful.Beonjoseon of the Gi family was usurped by Wiman in 193 BC; it was called Wiman Joseon henceforth.