Hi Hiya, The incredible force of wing chun is not only in chain punching. Bruce Lee said : Be formeless, shapless like water my friend. This mean that you don't have techniques to show like jab,jab uppercuts,round house... You adapte you fighting with the techniques of your opponent. I could explain to you all the philosophy of wing chun, but would write for pages. With the chi sao training, you develop your sensitivity. It is like pushing hands in tai chi. Wing chun is close range combat, so you always touch your opponent and can feel the next move he will do by feeling the way the opponent is transfering is energy. Don't be freaked out by the word energy, it's just the force that he is excercing and the transfer of his center of stability. I will let someone else explain the rest and surely reexplain my part because I have to go sleep. counichiwa