Tian Tian Tian is a Chinese restaurant near Ttukseom Station in Seongsu, Seoul, serving dishes such as dongpa haksen and jjajangmyeon. Its signature dish is dongpa haksen, a German-style pork hock cooked in the manner of dongpa yuk. At lunch the restaurant draws many customers, so food can take time to arrive, and rice is provided free of charge. It is located underground, which makes it less accessible.