I found this bit of possible historical information interesting, although unverifiable from any other existing source. Here's the link to the original article by John Chow:
http://www.yellowbamboohk.com/Tai_Ch...neagetree.html
This might explain Yang Cheng Fu's untimely death at the age of 53 (if the story is indeed true). Of course, many of the old masters were Opium addicts as well, yet this is something that is rarely discussed (one of Kung Fu's dirty little secrets, I suppose..lol).
Again, I found it interesting (if not irrelevant) and, being somewhat bored this afternoon, I thought I'd post it. Peace.