There's been a lot said about styles amounting to mere kicking and punching, but that is not Kung Fu's value. Kung Fu's value is in how it kicks and punches and why.
There are so many ways but crucial to my fighting style is the ability to turn a strike into a sticky, shock absorbing shield. And a shock absorbing shield into a strike. A step into a short round house that attacks a thigh that is not around house. The weight is forward, like a step, but heavy.
Ba Gua's peach palm!
The principles of Hsing-I cannon fist, the mechanics of it. The strategy behind Hsing-I's swallow.... awesome. Very clever and effective.
The phoenix eye fist... at the right time, the right place... I've broken someone's rib with it.... I believe this could be applied with great effect on the bottom if allowed in BJJ. To loosen someone up. Not a strike. Just pressure on certain points: ribs, inner thigh, under armpit/rib, etc., etc.
These are just things I've picked up from the styles that I studied. Obviously there's so manny more than I'm not aware of.