So... Here some facts: Leung Bik did exist, his full name was Leung Bik Wor. he died in 1911 and is buried in Fatsaan. Yip Man was enrolled at the College in HK when he was 18 (IIRC), so given he was born in the early 1890s, he could not have learnt from Leung Bik. nor could any student of Wai Yan have personally met Leung Bik...
Interesting, seeing as a lot of people online were claiming that Leung Bic never existed. It would be great if you could direct us to some sources!
BTW, according to what's currently on Wikipedia, Yip Man went to Hong Kong when he was 16, which would have been around 1909, and matriculated at St. Stephen's College (a prep school) the following year. If your facts are correct, that would have made it possible for Yip Man to have met and perhaps to have briefly trained with Leung Bic for about a year.