The fine points in flowing with an opponent's momentum

How would you ensure that you have the best advantages of the techniques you are applying? This is realized by having picture-perfect form. And a good way to realize this is to attain the three harmonies of legs, body and hands, which correspond to good stances, waist rotation and correct hand forms. Some finer points regarding skills -- like how to sense an opponent's force, how to flow with his momentum and how to deflect his attack -- are also explained.