Chwankeo is a Chinese restaurant near the back gate of Hankuk University of Foreign Studies that serves lamb skewers and guobaorou. The lamb skewers come seasoned, and the guobaorou is cut into bite-sized pieces and coated in glutinous rice batter, with mara-myeon and mapo tofu also among the commonly ordered dishes. At the entrance you write your name and the dishes you want in a notebook, and while you can walk in at 11:30 a.m., after 12 p.m. you may wait about an hour. The space is small, so waits are long in the evening.