oh, and while I don't agree with all it, it IS still 100% better than 99% of the wing chun stuff on the internet
there is an old chinese saying
shou bu li xin 手不离心: the hand does not leave the heart
zhou bu li le 肘不离肋: the elbow does not leave the rib.
san jian xiang zhao 三尖相照: 3 points aligned, the hand, the nose, and the lead foot aligned.
basically
the hands are to protect the chest/heart
the elbows are to protect the ribside.
elbow/forearm up is called gua.
and we all know tapping hand or pai shou.
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in short, these are not unique to WC.
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