Jungwonjang is an old Chinese restaurant in Guro-dong that serves jjajangmyeon, jjamppong, and udon. The ganjjajang includes onion and other ingredients, and mulmandu can be ordered alongside it. Food comes out quickly after ordering, and samseon jjamppong and tangsuyuk are also listed on the menu. The restaurant has operated in the same spot for a long time and has many regulars from the neighborhood.