The senior Lau claimed a direct martial lineage from "Magnificent Butcher" Lam Sai-wing, a disciple of turn-of-the-20th-century Hong Fist legend and latter-day iconic HK movie character Wong Fei-hong. Lau Charn played Lam in the early films of the long series of black-and-white B pictures about Wong that began production in HK the late 1940s. Kar-leung entered the family business as an extra and stuntman on his dad's films around 1950.
Lau conceived and directed what is widely regarded as the definitive historical Chinese martial arts movie, "The 36th Chamber of Shaolin" (1978), starring his adopted martial brother Gordon Lau Kar-wing aka Gordon Liu ("Kill Bill"). Based on a Cantonese pulp novel of the 1940s, the film gave lasting shape to the central populist myth of the Shaolin Monastery, the story of a fugitive from oppression who works his way through a series of grueling training rituals, acquiring skills that enable him to turn the tables on his enemies.
The classic martial arts movies Lau made at Shaw Brothers also included "Challenge of the Masters" (1976), "Executioners from Shaolin" (1977), "Heroes of the East" (1978), "My Young Auntie" (1981) and "Legendary Weapons of China" (1982). Later he did strong work with younger performers such as Jet Li, in "Martial Arts of Shaolin" (1986), and Jackie Chan, in "Drunken Master II" (1994).
At Shaws, Lau and Tang choreographed most to the violent macho kung fu films of Chang Cheh, including "Men From the Monastary" (1974), "Five Shaolin Masters" (1974) and "Shaolin Martial Arts" (1974). And in his first film as a director, "The Spiritual Boxer" ( 1976), Lau created nothing less than a new sub-genre, the raucous kung fu comedy, which would become a Hong Kong staple in the 1980s in the work of Jackie Chan and Sammo Hung.
This Japanese TV segment has cool footage of Lau sifu directing Gordon in "The 8 Diagram Pole Fighter" (1983). No English, unfortunately.
And the final fight sequence from the film: