Security ... think about it!
The idea is relatively simple. If you’ve got a problem making the arms express what the torso wants, instead of the other way around, all you have to do is eliminate the arms. That’s right cut them off and immediately notice that your Kung Fu gets a lot more lively because your entire body has to take part in each and every motion. (That’s part of what we refer to as “organic”, that term so many of you ask about.) You can do this, and we do, by strapping that arms to the body so they cannot move independently. This is the “shortening” method. Another way, often better, is to extend the arms out in space as though they were 2 X 4’s. This is the “lengthening” method.