'Til Madness Do Us Part (simplified Chinese: 疯爱; traditional Chinese: 瘋愛) is a 2013 Chinese documentary film directed by Wang Bing. It observes the daily activity on one floor of a Chinese mental institution in Yunnan, Southwest of China. It premiered at the 70th Venice International Film Festival.The floor of the Chinese mental institution houses 50 male patients who are there for killing someone, committing a crime against a public official, or have a developmental disability. It is not clearly stated why the men are in the mental institution, adding to the observational approach of the documentary. The documentary film uses handheld camerawork and digital video to capture the relationship between society and individuals. Towards the end of the film, one of the patients is allowed to return to his home village. It creates a contrast to the isolation and atmosphere of the mental institution.