Simon Yam was born 19 March 1955 in Hong Kong. Yam started off as a model before becoming an actor in the mid 1970s. He then signed with the Hong Kong television network TVB, starring and co-starring in a number of television series prior to "apply his trades" in the film industry in 1987. His elder brother is Yam Tak-wing, a retired former Deputy Commissioner of Hong Kong Police. In 1989, he starred in the Japanese-Hong Kong co-production of Bloodfight. This was the first of its kind in which English was spoken throughout the entire film. In 1992, Yam gained critical acclaim for his role as the maniacal Judge in the crime film Full Contact, where he faced off in a bloody battle against Chow Yun-fat's character. In 1993, he starred as "Dhalsim" in the action-comedy film Future Cops, a parody of Street Fighter directed by Wong Jing. In 1996, Yam began his role as Chiang Tin-Sung, the leader of the Hung Hing triads in the first three instalments of the Young and Dangerous film series. In 2000, Yam starred as Cheung San, the progenitor of all vampires, in the television series My Date with a Vampire II, produced by ATV. In 2003, Yam made his Hollywood film debut in Lara Croft: Tomb Raider – The Cradle of Life as Shaolin crime lord. In 2013, Yam directed his first film, as part of the Hong Kong portmaneau horror film Tales from the Dark 1.Yam is married to Sophia Kao, known as Qi Qi, an international model. Kao was born in Shanghai, but raised in Austria. They have a daughter, Ella.

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