sentences:  From that position he moved up to become a cinematographer.As a cinematographer he worked with a number of renowned directors, mainly with Sun Chung with whom he worked on films such as "The Drug Connection" (1976), "Big Bad Sis" (1976), "The Proud Youth" (1978) or "The Avenging Eagle" (1978).Lam worked as a cinematographer for seven years and was regarded as one of the best of his trade at the Shaw Brothers studio.