|Directed by|| Tsui Hark |
|Written by||Half Leisure|
|Produced by||Tsui Hark|
|Starring|| Louis Koo |
|Edited by||David M. Richardson|
|Music by||Dave Klotz|
|Distributed by||Media Asia Distribution|
Triangle (simplified Chinese :铁三角; traditional Chinese :鐵三角; pinyin :tie san jiao) is a 2007 Hong Kong action film produced and directed by Tsui Hark, Ringo Lam, and Johnnie To. The film's title refers to both the acclaimed trio of filmmakers and to the uneasy brotherhood of the film's three protagonists. Triangle tells one story which is told in three thirty-minute segments, independently helmed by the three directors. It stars Louis Koo, Simon Yam and Sun Honglei as a group of friends who uncover a hidden treasure that quickly draws attention among others. The film's tagline is "Temptation. Jealousy. Destiny." Each word is often associated with the segments that appear in chronological order.
The first Hong Kong film made in a frame story format, Triangle had each director take charge of a film segment, bringing in their own production team and screenwriters to continue the story set in motion by the previous director. Critics made easy notice of the lack of continuity in between each segment, since the trio of directors did not share their scripts together while discussing the concepts.
Triangle was screened out of competition at the 2007 Cannes Film Festival.  It was later released in China on 1 October 2007, which was one month before its theatrical Hong Kong release.
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Small-timer Fei (Louis Koo), his married buddy Sam (Simon Yam), and antique store owner Mok (Sun Hong Lei) are all in desperate need of money. Fei wants his friend to drive a robbery getaway car, but Sam backs out, throwing Fei in trouble with the triads. As the three are arguing, a mysterious man leaves them a map, leading them to an unlikely treasure under the Legislative Council building. All their financial woes seem to be solved after a late-night heist, but they are being tracked by shady cop Wen (Gordon Lam), who is carrying on an affair with Sam's emotionally unstable wife, Ling (Kelly Lin), and has connections with Fei. When the twisted relationship tangles come to light, the brotherhood dangerously breaks down and the treasure ends up in the wrong hands.
The film was shot entirely in Hong Kong with actors from the city and Mainland China. Each director was solely responsible for one third of the film (about 30-minute long). They did not discuss their segments with each other, and each director had a different set of writers working on each segment, the most notable being Yau Nai-hoi, Au Kin-yee and Yip Tin-shing, frequent scriptwriters for Johnnie To and his Milkyway Image films. All of the segments relied on the same editor, cinematographer and music for the sake of uniformity.  David M. Richardson served as an editor, Guy Zerafa provided the film score and Cheng Siu-Keung served as cinematographer. All three worked on To's 2006 film Exiled .
Tsui Hark was the first to start production for the film, since To and Lam agreed that it was his original concept. The initial plan was to shoot Triangle at the end of 2007, but the plan was changed due to the overwhelming positive response from a large number of European distributors.  After Tsui completed the first segment of Triangle, Lam looked at the development of it before shooting the second part, and handed the film to Johnnie To who completed the third part with its conclusion. 
Triangle was screened out of competition at the 2007 Cannes Film Festival.  It was also screened at the Santa Barbara International Film Festival and the Seattle International Film Festival.
Ringo Lam Ling-Tung was a Hong Kong film director, producer, and screenwriter. Born in Hong Kong in 1955, Lam initially went to acting school. After finding he preferred making films to acting, he went to Canada to study film. In 1983, he returned and began filming comedy films. After the commercial success of his film Aces Go Places IV, he was allowed to develop his own film. Lam directed City on Fire in 1987, which led him to winning his first Hong Kong Film Award.
Tsui Hark, born Tsui Man-kong, is a Hong Kong film director, producer and screenwriter. Tsui has directed several influential Hong Kong films such as Zu Warriors from the Magic Mountain (1983), the Once Upon a Time in China film series (1991–1997) and The Blade (1995). Tsui also has been a prolific writer and producer; his productions include A Better Tomorrow (1986), A Better Tomorrow II (1987), A Chinese Ghost Story (1987), The Killer (1989), The Legend of the Swordsman (1992), The Wicked City (1992), Iron Monkey (1993) and Black Mask (1996). He is viewed as a major figure in the Golden Age of Hong Kong cinema and is regarded by critics as "one of the masters of Asian cinematography".
Johnnie To Kei-fung is a Hong Kong film director, screenwriter and film producer. Popular in his native Hong Kong, To has also found acclaim overseas. Intensely prolific, To has made films in a variety of genres, though in the West he is best known for his action and crime movies, which have earned him critical respect and a cult following.
Detective Investigation Files IV is the 4th and final installment of the Detective Investigation Files TV franchised by TVB in Hong Kong. It won two TVB Anniversary Awards, including Best Actor for Louis Koo and Best Actress for Jessica Hsuan.
Election, is a 2005 Hong Kong crime film directed by Johnnie To. Featuring a large ensemble cast, the film stars Simon Yam and Tony Leung Ka-fai as two gang leaders engaged in a power struggle to become the new leader of a Hong Kong triad.
Kelly Lin or Lin Hsi-Lei is a Taiwanese actress and model who has appeared mainly in Hong Kong films.
Election 2, also known as Triad Election in the United States, is a 2006 Category III Hong Kong crime film directed by Johnnie To with a large ensemble cast including Louis Koo, Simon Yam and Nick Cheung. A sequel to the 2005 film Election, the film concludes the events of the first film centring on triad boss Lok, who struggles to get re-elected as his two-year term approaches its end. He faces competition from Jimmy, who wants to retire from the triad to be a legitimate businessman, but gets drawn into the conflict surrounding the election.
Once Upon a Time in China V is a 1994 Hong Kong–Chinese martial arts action film written and directed by Tsui Hark. The film is the fifth installment in the Once Upon a Time in China film series, with Vincent Zhao reprising his role as Chinese martial arts master and folk hero of Cantonese ethnicity Wong Fei-hung after taking over the character from Jet Li in Once Upon a Time in China IV. The film also saw the return of Hark as director and of Rosamund Kwan as "13th Aunt", who was absent in the fourth film.
Eye in the Sky is a 2007 Hong Kong action thriller film starring Simon Yam, Tony Leung Ka-fai and Miss Hong Kong pageant winner Kate Tsui in her film debut. Yam and Tsui play surveillance operatives on the trail of a gang of professional robbers led by Chan Chong-Shan (Leung). The title is derived from the casino surveillance tech "eye in the sky". It marks the directorial debut of Yau Nai-hoi, a long-time screenwriter for films directed by Johnnie To, who co-produced the film with his production company Milkyway Image. Eye in the Sky premiered as an Official Selection at the 2007 Berlin International Film Festival, and as an Opening Film at the Hong Kong International Film Festival. It was released in Hong Kong on 21 June 2007.
Martin Richard Chappell, born in Nottingham, England is a musician-turned-Hong Kong sound editor. He is most notable for serving as a sound editor on Hong Kong films made by Johnnie To and his production company, Milkyway Image.
Sparrow is a 2008 Hong Kong caper film produced and directed by Johnnie To. The film stars veteran Milkyway Image cast and crew alumni Simon Yam, Gordon Lam, Law Wing-cheung and Kenneth Cheung as a small gang of pickpockets, with each member being mysteriously approached by a beautiful Taiwanese woman with a hidden agenda.
A Hero Never Dies is a 1998 Hong Kong action crime drama, and the first Milkyway Image film to be directed by Johnnie To.
Vengeance is a 2009 action thriller film co-produced and directed by Johnnie To, and written by Wai Ka-Fai. It stars Johnny Hallyday, Anthony Wong, Gordon Lam, Lam Suet, Simon Yam, Michelle Ye and Sylvie Testud. The film tells the story of Francis Costello, a French chef and former assassin whose daughter, son-in-law and grandchildren are attacked by a gang of Triads. Costello travels to Macau to embark on a quest for revenge, enlisting the aid of three hitmen. The film explores the themes of assassination, violence and the influence of Triads in modern society. Produced by Milkyway Image, the film was released by ARP Sélection in France, and Media Asia Films in Hong Kong.
The Smiling, Proud Wanderer is a Hong Kong wuxia television series adapted from Louis Cha's novel of the same title, starring Chow Yun-fat and Rebecca Chan. It was first broadcast on TVB Jade in Hong Kong from in 1984.
Milkyway Image Ltd. is a production company based in Kwun Tong, Kowloon, Hong Kong. The company was established in 1996 by prolific director Johnnie To in joint partnership with frequent collaborator Wai Ka-Fai. The company is known best for producing dark crime films inspired by the work of French director Jean-Pierre Melville and the genre of film noir. Milkyway Image's productions have been repeatedly praised as a bold move against the commercialism found in post-handover Hong Kong cinema, and have also attracted a significant international fan base.
Forensic Heroes is a series of TVB police procedural television dramas written by Choi Ting-ting (I–III), Chan Ching-yee (I–II), Leung Man-wah (III-IV), Yuen Mei-fung (IV), Sin Chui-ching (IV), Yip Tin-shing (V) and Sin Siu-chun (V), and produced by Mui Siu-ching (I-IV)and Ben Fong (IV-V). The series follows a group of Hong Kong forensic scientists working together with the Hong Kong police to solve murders through physical evidence left over from crime scenes. Currently, two serials and three reboot installment were produced.
Kung Hei Fat Choy is a 1985 Hong Kong comedy film produced, directed by and starring Dean Shek. The film co-stars Alan Tam and George Lam. Released to celebrate the Chinese New Year of 1985, the film's title is based on the greeting wishers give on the new year's first day.
Happy Ghost III is a 1986 Hong Kong comedy film directed by Johnnie To. Produced and written by Raymond Wong, the film stars Wong and Maggie Cheung. This is the third installment in the "Happy Ghost" series, the film is far more frenetically paced than the first two and its much more a film for adults. The film is about a spirit of the late female singer Tsui Pan Han waits in the afterlife for a chance to be reincarnated. She meets the Godfather who has found an appropriate musical family for her to be reincarnated with. Her opportunity to be born into the new family is ruined when Sam Kwai takes the pregnant wife to the wrong hospital. Pan Han is given one month to find a new body to assume her reincarnation in, and decides in the meantime to harass Sam Kwai. Kwai eventually summons the Happy Ghost to help him out.
Ocean Flame is a 2008 Hong Kong romantic comedy film directed by Liu Fendou and starring Liao Fan and Monica Mok. The plot is based on Wang Shuo's novel of the same title. It was released on 11 September 2008.
Septet: The Story of Hong Kong is a 2022 Hong Kong anthology historical drama film directed by Sammo Hung, Ann Hui, Patrick Tam, Yuen Woo-ping, Ringo Lam, Johnnie To and Tsui Hark, seven filmmakers of the Hong Kong New Wave. It is divided into seven stories, each corresponding to a decade in Hong Kong's history, told from the view of ordinary people.