Ryuchaina is a Chinese restaurant serving Taiwanese-style Chinese food in the KGIT Building in Sangam-dong, Seoul. It serves uni jjajang, yurinji, and gaji twigim, and its bokkeum bap has a wok-fired flavor. During long queues, a single bowl of jjajangmyeon took an hour, and lunch service is slow. The seafood-centered jjamppong depends on personal taste.