Jageun Jungsikdang Riu is a Chinese restaurant in Nangok-dong, Seoul. It serves mayo saeu, tangsuyuk, and kkangpunggi, with the sauce poured over the tangsuyuk before serving. The restaurant does not offer delivery and provides takeout only. The jjamppong has firm-textured toppings, while the jjajangmyeon has a smoky wok flavor.