What are their relative strengths and weaknesses? I, in truth, have not yet understood any sort of codified way WCers punch except that they do so vertically, and oftentimes one after the next (chain punch). That's pretty much where I am at with understanding how they punch, but I want to know the FULL how, as well as the WHY (why do they determine this is the best way to go?) So if you could explain what differentiates the punch as well as the relative strengths and weaknesses of them, that would be helpful (and the proper execution and idea behind wing chun punches). Thanks.