I think this is what caused the Emin/Cheung fight:
In reply of the William Cheung Interview Feb 1996 Mitcham Kwoon.
The following letter appears in Martial Arts Magazines
VING TSUN ATHLETIC ASSOCIATION LTD
3, Nullah Rd., 2C/fl., Kowloon,
Hong Kong Tel 3-816044
RE: Point Three of the minutes of the 11th General Meeting
Recently we have received many letters and complaints about a person
called William Cheung who has distorted many affairs with ulterior motive.
As the board of directors of the Ving Tsun Athletic Association -- the
general association of the WHOLE Ving Tsun (Wing Tsun / Wing Chun) system,
which was founded by the late Grandmaster Yip Man and most of his senior
students since 1976, we have the responsibility to clarify the following
1/ William Cheung has NEVER been regarded by anyone of his fellow-students
as the grandmaster or the leader of the whole Wing Chun Clan.
2/ NOBODY is recognized as the so-called "No 1 student of Grandmaster
Yip Man" and we have NEVER heard of William Cheung as the "No. 1 Fighter
of the Wing Chun Style".
3/ "Footwork" in the Wing Chun System is regarded as a most advanced
technique. We do not deny that some of the students of Grandmaster
Yip Man did not learn the whole system, but it is NOT TRUE that
William Cheung is the ONLY person to have ever learnt the entire
Wing Chun System" as what he announced in his advertisement.
4/ There have NEVER been any techniques in our system called "DIM-MAK" or
"Disabling Pressure Points", NOR any so-called "Missing Techniques" since
the creation of the Wing Chun System by Ng Mui.
5/ When Grandmaster Yip Man taught the techniques to his students he asked
NO-ONE "to take an oath not to reveal the secret to anyone during his life
time." He taught according to the potential of his students, teaching
the most advanced techniques to the most talented ones.
In the mid of 50's there had been a kid called William Cheung who had studied
in Grandmaster Yip Man's school for a few years intermittently and left
Hong Kong when he was 18 years old, and since then had become isolated from
his instructor and all the other fellow-students. During his short training
he surely gained the wrong impression in thinking that Grandmaster Yip Man
never taught the advanced techniques to students other than himself. And yet
we do not know how much William Cheung really learned himself.
It is regrettable that his lies have gone so far (i.e he told the
reporters that Grandmaster Yip Man had taught only him the so-called
"traditional Wing Chun", but had taught all his other students the
"modified Wing Chun").
However, any average person could easily analyze his techniques and see
this statement must be a lie. It is unthinkable that Grandmaster Yip Man
would choose to cheat all the students except one impudent kid, who actually
had little respect for him!
We feel sorry to have such an ignorant person in out clan, We want
to establish our position: we have NEVER AGREED with his Crazy
self-promotion, though we do understand his motive in casting himself as the
"Superman" in the William Cheung's Wing Chun System.
The Board Of Directors and Attendance in the meeting of clarification
the distored affairs.
Wong Shun Leung (Chairman)
Leung Ting (Vice Chairman)
Tong Chao Chi (Vice Chairman)
Lok Yiu (President)
Yip Ching (Vice President)
Ho Kam Ming (Vice President)
Siu Yuk Man (Secretary)
Chan Tak Chiu (Treasurer)
Tsui Sheung Tim (Membership Management)
Koo Sang (Membership Management)
Lee Wai Chi (Public Relation)
Victor Kan (attendance)
Yip Chun (attendance)