Riwiwen is a Chinese restaurant in Seoul that serves jjajangmyeon, jjamppong, and tangsuyuk. The chili shrimp are large, the nakji jjamppong contains a whole octopus, and the tangsuyuk comes out crispy. Both delivery orders and dine-in are available, and the haemul jaengban jjajang has a slightly spicy flavor. The tangsuyuk stays crispy even after delivery.