[Grandmaster Chu Training Episodes #005]
This footage shows how the Wing Chun punch method is fundamentally different from our ordinary thinking. It is not launched by intending to throw out the elbow nor the fist. Rather, you apply the lifting mechanism of a jack device: lift up the elbow joint (appear to be springing) so that the arm is straightened (being “jacked” forward), and throughout the process there is no intention to thrust the fist to hit!
Punches launched in this way can immediately penetrate the target (e.g. a sandbag during practice). On the contrary, force from thrusting is largely dispersed before it can cause any harm, as manifested commonly as loud impact noises when hitting a sandbag (watch “The Common Misconception” in the footage).