Dongseonggak is a Chinese restaurant run by an overseas Chinese family near Sejong Center for the Performing Arts in Gwanghwamun, Seoul, and has operated for over 50 years. Its menu includes jjajangmyeon with thin noodles, bokkeum jjamppong with seafood, chapssal tangsuyuk, and gunmandu folded in-house. The restaurant sits inside an alley in Gwanghwamun, which makes it hard to find, and food can come out late at lunch. Noodle portions are on the small side.