To be honest...this all sounds like a bunch of hooey.
It's very hard to take seriously an argument that you can only learn a certain skill by training a certain martial art, especially as specific as this. I've seen similar claims, such as boxers claiming boxing is unique because it has footwork, or the Gracies claiming jiu-jitsu is unique because it's the only martial art where you don't punch each other.
Similarly, the 1-inch-punch exists in some form in quite a few martial arts. It's not unique to this school. Their definition of "shock power" appears to be that the action is done with the power you would use if shocked (based on the line,
"The easiest way of describing and appreciating this type of power is if you inadvertently touch a hot cooker, thespeed and reflex combined with force with which you remove your hand, gives you an idea of the Gen power.").
That sudden, explosive power is important for pretty much any striking art. It's cool that they have drills to focus on this, but their explanation of it as a skill unique to Chow Gar Hakka Southern Praying Mantis Kung Fu is rather ludicrous.
This is just a mouthful, and maybe there's a translation issue going on, but...
- Gen (shock) power uses "shock power" as an element of it, and then there's a further type called Gen Gen which is called Shock Power. This seems to me like if you had the three elements of water listed as hydrogen, oxygen, and water. And then there's wet water.
- This gets even worse, because earlier they define "inch force power" as coming from shock power, but now it is an element of shock power, alongside shock power as another element of shock power.
- The elements they list are contradictory, such as including hard and soft power as part of the mechanism. It feels like they're leaning too hard into a yin/yang and instead they're just throwing every buzzword out to try and sound more "legitimate", but it comes across as just bad advertising.
I'm not saying this is a good or bad school. But this seems to be a deceptively convoluted advertisement for their program.