I've often heard of the Lee Shing Families methods referred to as Pien San, or Side Body Wing Chun.

Has anyone out there trained in these methods?

Do you already have pien san in your Wing Chun training?

I've also, obviously, read the Chu, Ritchie, Wu book that mentions Lee Shing as being a student of Fung Sang. Other sources also include the legendary Ng Jung So, Fung Yee Min, Koo Siu Lung, Chan Wah Shun, Yiu Chui, Lok Yiu, Jiu Wan and Ip Man as having something to do with Lee Shings learning.

I myself can't prove any of this. They're just ideas I've read and only heard others talk of very rarely.

Any comments would be very welcome.