Thunder Foot
Brown Belt
I've found it in my experience to be a way to further enhance your impact potential. As mentioned before, I learned it as a training tool so once you understand it, you may find ways to express it in other techs. It's present in all the hand forms, more present in Chum Kiu and crucial to a good Biu Jee and BJD in how I was taught.Push/pull force. Interesting, I would have leaned towards a lot more push. So the two start to work in tandem?
But don't take my word for it, give it a go yourself. As long as you're receptive to it, I'm sure you'll stumble upon the general mechanics if it's not already present in what you do.