I concur with reydge on many points regarding QHBD and BXJF. My own interpretation is like this
- The 2 Huashan brothers wrote down whatever they could memorize from the original version, without their own interpretation. This later became DFBB's QHBD. To me, this is the most "intact" version after the original.
- LYT didn't even get to see the above version. He just stringed together bits and pieces from his tutelage sessions with the 2 Huashan brothers. Then he added his own interpretation and it became the 72 stances of BXJF.
- To me LYT's version would be easier to learn than DFBB's version (think of it as the noted version of a really hard textbook). But also, because of this, it cannot be as powerful as DFBB's version. Think of it this way. DFBB gets to interpret the art through a written down book, while LYT gets to interpret it just through bits and pieces from a conversation. The most obvious demonstration of this is BXJF repeats after 72 stances while DFBB's QHBD doesn't. Till the end, LHC still hasn't figured out how to beat DFBB. DFBB's version is more "formless" than BXJF.
- DFBB doesn't carry a sword with him. No one ever remembers him using a sword. The indication is very strong that the original version was created for a needle, which would be a more natural weapon of choice for a eunuch than a sword. QHBD (and BXJF) relies on speed and agility. If you have enough inner power to infuse the needle with the power of a sword, it will be a lot better because the needle is a lot more agile. DFBB uses the needle like the extension of his fingers.
- In fact, DFBB's utilization of the needle as the more agile sword is very similar to another swordplay that we know: Duan Yu's 6MSJ. They both offer superiority over regular swordplays because they are more agile.