Geum Mi-dal(今彌達) in Early Warring States period:

The word current Mi-dal(今彌達) in the Book of Wei (魏書云) was the capital of Old Joseon during the feudal state Wei. Scholar at that time compiled the Book of Wei that Monk Ilryeo cited. By considering the source of information and time of compilation, the current Mi-dal, and “方忽山, 藏唐京” were in the Shanxi province along the eastern slope of Taihang Mountains where the metal (鐵, 銕; 釒夷)had been extracted by Dong-yi and three metal seal approved by the Heaven (天符印) were made . Since the birth of Old Joseon during the era of Tao and Shun “唐虞之際，於斯為盛” till the beginning of the Warring States Period, all the capitals were in the Taihang Mountains. Joseon had been emerged and stayed there for long time. Annals and Shiji didn’t used the name Joseon, but used replaced with elusive names.

고조선의 수도 “今彌達 藏唐京”은 중국 산성성에 있었다.