After moving to Melbourne to teach Wing Chun professionally in 1973, Cheung began operating a very successful Martial Arts School. In 1976 he was elected the President of the Australian Kung Fu Federation.
Cheung was appointed as Chief Instructor to the U.S. Seventh Fleet based in Yukosuka, Japan, during 1978 to 1980. Throughout this time, he was in charge of the intensive mental and physical development program of close quarter hand to hand combat for the marines.
Many of Cheung’s students have achieved international recognition for their martial arts prowess. In 1982 his students, Joe Mohinga and Rick Spain, won the heavyweight and middleweight divisions respectively in the World Invitation Kung Fu Championships held in Hong Kong. Furthermore, Cheung himself, in 1983, was inducted into the “Black Belt Hall of Fame” as Kung Fu Artist of the Year and again in 1989, into the “Inside Kung Fu Hall of Fame” as Martial Arts Instructor of the Year.
It was at the Harvard University, Boston, in 1984 that Grandmaster Cheung set the world speed punching record of 8.3 punches per second . To promulgate his ideas and stimulate and enliven the art, Cheung has authored a variety of books for the general public including “Wing Chun Biu Jee”, “Wing Chun Butterfly Swords”, “Wing Chun Dragon Pole”, “Advanced Wing Chun”, “How to Develop Chi Power”, “Wing Chun Kung Fu” (in French), “A Comparison of Wing Chun and Jeet Kune Do” Volumes I and II. He has also produced a number of videos, including the well-known “The Wing Chun Way”, “Tao of Wing Chun” and “PRO-TEKT: A Personal Protection Program”.
From his early training in Martial Arts, Grandmaster Cheung has become an expert in Meridian, Pressure Points and Meditation dealing with internal energies. Over the last ten years he has used this knowledge to develop many successful programs treating sports injuries and teaching stress management. Grandmaster William Cheung has been honored by the China Guangzhou Medical University and Hospital Research Institute as a Research Professor for his Cheung’s Meridian Therapy (CMT) program. This appointment is for the two year period from January 2000 until January 2002. As the result of these, Grandmaster Cheung’s seminars, workshops and treatments are now much sought after all over the world.
Here is an article written by Sifu Wong Shun Leung who was William Cheung’s senior at Yip Man’s school. In the article he talks about how William Cheung was the one who first introduced Bruce Lee to Yip (Ip) Man. William Cheung’s last name is Cantonese but it’s Chang in Mandarin. The article uses the Mandarin spelling Chang when referring to William Cheung
http://www.wongvingtsun.co.uk/wslbl.htm