Hongkong Chamchi Mandu is a Chinese-style dumpling shop in Seoul that serves dumplings and regional Chinese dishes. Its signature item is tuna dumplings, alongside three other dumplings such as chive boiled dumplings and tuna pan-fried dumplings, plus mapo tofu, guobaorou, and jisamseon. The shop moved from a shabby original location to a larger space, and it was full even at 2 p.m. on a Saturday. Card payment is not accepted for dumpling-only orders, which are cash only.