Today we going to explain shortly about one of the most important concepts in Wing Chun. It’s the Center Line theory There are different interpretations This is the center line axis On / around the centerline are most of the weak spots of the human body located. if you hit someone there, most of the time the fight is over Here is the heart, the throat, the eyes, nose… For me the same, the center axis That is one of the reason we attack the centerline / axis. That is one of the reasons why the fist start on the centerline in Traditional Wing Chun Most techniques moves from the center or attacks it. We both attack the centerline, so we must defend or conquer the centerline. One the of important concepts within the Centerline That his center to my center is the shortest distance. From my shoulder to his center is longer right? But center to to center is the shortest There are a few problems with this theory. If we attack both on the centerline, there is a big chance we hit each other. Also the shortest distance concept is wrong. Of course, chest to chest is the shortest. But I don’t attack with my chest. I attack with my fist. So I should use the starting position of my fist to measure the distance to the center A lot of people forget that the fist and arm is connected to the shoulder So if I place the fist here, on the triangle line. We call this the triangle concept than this is the shortest distance. It’s a direct straight line. from my shoulder to his center. If I place my fist here, the shortest distance. and now I move the whole arm to the center I keep the same angle and distance from fist to my shoulder you see that the distance fist to his center increases So I place it here and now on the center, the distance increases. if you measure this with the theory of Pythagoras than you will find out that the difference is 7 cm This is 7 cm (triangle line) shorter than on the center. Almost a whole fist. That’s why the shortest distance theory is wrong. That is one of the reasons why chain punching from the center is incorrect if we believe this is the shortest distance. If you measure it yourself, you will see it too This is one of the underlying basic concepts in Traditional Wing Chun. If this is wrong, than some other things are/might be also wrong. This is something you have to think about. An advantage using the triangle is because we cut through the attacks. And the triangle is one of the strongest shapes in physics The maths I did to calculate why the center is NOT the shortest distance.