Sejongwon is an old Chinese restaurant in Gunja-dong, Gwangjin-gu, Seoul, serving jjajangmyeon, jjamppong and tangsuyuk in front of Sejong University. It offers a half-and-half tangsuyuk and jjajangmyeon menu, and the won jjajang is spicy, so the regular jjajang is also available. The restaurant was formerly named Manganghong and is now called Sejongwon, and orders come out right away. The food is clean for Chinese cuisine but plain rather than distinctive.