Hamhung (hämˈhŏngˈ) [key], Jap. Kanko, city (1993 pop. 709,730), capital of South Hamgyong prov., E central North Korea. It is a leading port for Korean foreign trade as well as a major industrial center. Textiles, metalware, machinery, and chemicals are produced, oil is refined, and food is processed. Coal mines are nearby. The founder of the Choson (Yi) dynasty, the last imperial line of Korea, was born in Hamhung.