To think that BJ is about strengthening fingers by plunging them into sand is ridiculous! BJ used to be kept secret but not because of the reasons that were out there in those days. Still to this day people think that BJ is about "moving chi to the fingertips and about striking with the fingers! It's nonsense!
At least he says one thing that is true......Presently we can say that the videos of Biu Jee are as numerous as the hairs of an ox...this applies not only to BJ and most have conflicting ideas. In my experience it has been plain to see that the further through the system one travels with regards to different lineages the bigger the error in interpretation. It doesn't take Einstein to work out why either.
Anyway keep going Chee and I appreciate the work you are putting into this!
GH