PART 2 (Teil 2) CENTERLINE MODEL („Tube“) Questions & Answers: The tubeline starts from the center of our upper body and is directed at the opponent‘s vertical axis. And the hight is the height of his sternum, but the sternum is not necessarily the target, unless both fighters are square to each other. We always aim at what I call the „Wickline“ ( candle)! When both opponents are using the Yip Man „tube“, it is a constant fight for who is going through the correctly aligned tube. A wing chun man