GRANDMASTER LEUNG SHUM is the Master of Master Frank Marrero and, by lineage, the grandmaster of all students who study under Master Marrero.

Grandmaster Leung Shum is the godson and top student of the late Grandmaster Ng Wai Nung, ran the Hong Kong school of Eagle Claw from the 1950's, and came to America in 1972 to teach the system.

Grandmaster Leung Shum is in semi-retirement, travelling to the Eagle Claw schools of his students throughout the world to teach.

 
Grandmaster Leung Shum is also a highly respected instructor of Wu Style Tai Chi Chuan. He learned Wu style from Ng Wai Ngun who learned the style in the Ching Mo Gymnasium and trained with Master Cheng Wing Kwong, a famous Wu style Tai Chi Chuan instructor in Hong Kong.