yes that is so true train hard fight easy. I don't know as much about the northern system, my back ground is strictly in traditional southern systems, and grappling, I like the old styles. I guess if it has worked for over 36 generations there has to be something to it. My advice to you is go learn. and keep you mind open. the one thing I have learned, every thing you do has purpose so don't be fooled by the simplicity of an exercise or routine.
like picking up a spilt can of dried rice one piece at a time with chop sticks.