Black Coal, Thin Ice (Chinese: 白日焰火; pinyin: Bai Ri Yan Huo; literally: "Daylight Fireworks") is a 2014 Chinese thriller film written and directed by Diao Yinan. The film won the Golden Bear award at the 64th Berlin International Film Festival. The story is set in northern China in 1999 and 2004. A detective works to solve a series of murders where the victims dismembered parts are scattered across the province via coal shipments. The common thread is a female clerk in a dry cleaners. The project started from Diao Yinan's idea to film a detective story. Diao spent eight years in total to write the screenplay; the final version that was filmed was the third draft. The film was then laid out into a detective film noir. Liao Fan gained 44 pounds of weight to play the film's protagonist of an alcoholic and suspended police officer. The film's English title Black Coal, Thin Ice is different from its Chinese title Bai Ri Yan Huo, which translates literally as Daylight Fireworks. Diao...