Complex sentence: From 1960 to 1967, Hamhŭng was administered separately from South Hamgyŏng as a Directly Governed City ("Chikhalsi"), but before 1960, and since 1967, the city has been part of South Hamgyŏng Province.
Split into simpler sentences: From 1960 to 1967, Hamhŭng was administered separately from South Hamgyŏng as a Directly Governed City ("Chikhalsi"). Before 1960 and since 1967, the city has been part of South Hamgyŏng Province.