Nakseong is a Chinese restaurant in Gwanak-gu, Seoul, an eight-minute walk from Nakseongdae Station Exit 1, serving jajangmyeon, jjamppong, and tangsuyuk. Its signature gogi jjamppong comes with thin noodles, generous seafood and vegetable pieces, and a spicy broth with a smoky wok flavor. The dining room seats about twenty, and food arrives within three to ten minutes of ordering, with many solo diners. There is no parking lot, so visiting by car is inconvenient.