Poongsan (Korean: 풍산개; Hanja: 豊山개; RR: Pungsangae; MR: P'ungsan'gae; lit. "Phungsan Dog") is a 2011 South Korean thriller film directed by Juhn Jai-hong, starring Yoon Kye-sang and Kim Gyu-ri. Poongsan, whose real name is never revealed, is a mysterious messenger who crosses the demarcation line between the two Koreas, delivering letters and cherished heirlooms between separated families in Seoul and Pyongyang. Part love story, part postwar tragedy, with a dose of comedy thrown in, the low-budget film Poongsan depicts the sad reality of the division between the two Koreas.