Hyo Dong Gak Korean Restaurant is a Korean-style Chinese restaurant in Manhattan that serves jjajangmyeon, jjamppong, and tangsuyuk. The jjamjjamyeon combines jjamppong and jjajangmyeon in one bowl, and the jjamppong broth is spicy and clean. The jjamppong contains seafood in amounts comparable to samseon jjamppong, and you can ask for it spicier when ordering. The tangsuyuk tastes fine, but the portion is on the small side.