This clip is from the Yip Man movie 2008 and it is arguably one of the best fight scenes of all time    

Here is a really funny parody of the Yip Man scene with the 10 black belts posted above

A great example of what we call Chi Sao in Wing Chun also known as sticky hands. It is an important part of training contact reflexes which make you respond faster than eye sight. Note the woman in this clip, she proves how this style can work no matter your size.