by Randy Williams WCW06-D In-depth explanation of Look Sau Rolling Arms Cycle and Two Changes, 25 Gwah Sau Combat Attacking Combinations from the roll, two response chains showing multiple variations of possible outcomes from the same initial attack, Insertion of the Lop Sau changes into the roll and more. Approximate running time: 50 minutes When Steven Seagal, Phil Collins or Eric Clapton needed bodyguard protection, they called Wing Chun master Randy Williams, one of the world's foremost experts on self-defense. Williams, who operates schools in various parts of the world, began training at the age of 13 under George Yau and completed his instruction in the system under world renown master Augustine Fong.