Wonjo Jjajang is a Chinese restaurant in Busan that serves jjajangmyeon, jjamppong, and tangsuyuk. The jjajangmyeon and jjamppong are good, and the tangsuyuk is crisp and chewy. Orders can be placed without a delivery fee, and the portions are large. The other cooked dishes are weaker than the jjajangmyeon and jjamppong.