A Brighter Summer Day (Traditional Chinese: 牯嶺街少年殺人事件) is a nearly four-hour long, 1991 Taiwanese drama film directed by Taiwanese director Edward Yang. The film is an extraordinarily large project for a Chinese-language film, not only for its duration of almost four hours, but also for its involvement of more than 100 amateur actors in different roles.
Set in 1960s Taipei, the film is based on a real incident that the director remembers from his school days when he was 13. The original Chinese title, 牯嶺街少年殺人事件, translates literally as "The Murder Incident of the Boy on Guling Street", referring to the 14-year-old son of a civil servant who murders his girlfriend, who was also involved with a teenaged gang leader, for unclear reasons. The gang leader and girlfriend are involved in the conflict between gangs of children of formerly-mainland families and those of Taiwanese families. The film places the murder incident in the context of the political environment in Taiwan at that time. The film's political background is introduced in intertitles thus:
Chang Kuo-Chu, and his son Chang Chen (in his debut) are both cast in this film.
In 2009, the World Cinema Foundation issued a