I have never claimed to be "proficient" in ground skills. I have said that the Mainland Chinese WC curriculum has ground fighting practice as a part of its traditional methodology.
Unfortunately, I had to move countries before I covered that area, and nowadays whenever I travel and meet sifu, I concentrate on polishing up what I already know. All this does not change the fact that various TCMAs address the groundfighting scenarios!
If you have any doubts about the skills of any TCMA sifu, you are free to go to their kwoon (kung fu schools) and challenge them!
Very true, Yip Man was very well known for his BJJ skills.....
They can "explore" anything they like, but IMHO, they should first
concisley explore the art of Wing Chun, before they go onto "improving" it.
You need to have a
pure view of Wing Chun if you wish to improve it, because pure view will imply concise understanding of this profound art.