After some practice with Centerline Theory defense and attack, the Wing Chun fighter can do both simultaneously and independently. It can be done with two hands at once, moving together. At the same time, each creates its Attack or Defense Pyramid, or with a single movement in a more advanced yet perplexingly simple application. 

Complex Attack- When a fighter applies a block or deflection with one hand while simultaneously attacking with the other, the resulting block/strike combination is known as a “Complex Attack” in CRCA Wing Chun. This type of attack is made possible by the fact that each hand can potentially create either an Attack or Defense Pyramid at any time and that the structure of the Wing Chun movement allows for simultaneous technique from both hands. This type of motion causes no loss of speed or power. Indeed, more speed and strength can be gathered into the attack from the initial momentum of the block, which, while appearing to be completely simultaneous, occurs a split second before the attack. To demonstrate the Gang Da motion, the Wing Chun man first circles the wrist of the Gang hand before snapping/sweeping it downward with a stance turn, Bracing step, or other footwork. This initial momentum goes through the waist and shoulders to the punching hand, which enters halfway to its destination and finishes just after the block snaps to full extension.

Complex Blocks and Double Attacks— Following the concept of creating two independent Attack/Defense Pyramids, it can be seen that Complex Motions involving two Blocking Lines or two Attacking Lines, rather than blending the two, are equally possible. The opponent’s actions primarily determine this. When confronted with a potent attack, closely timed one-two attack, or even a two-handed attack, the Wing Chun fighter may go directly to counter with a two-handed block of his own. This is known to as a “Complex Block.” Similarly, the Wing Chun practitioner can launch two simultaneous or near-simultaneous strikes, one or both of which can also be used to block as they attack. An opponent may find it challenging to deal with this double attack, especially if both are strategically directed toward poorly defended or structurally disadvantaged target areas as determined by Centerline and Facing awareness.

One-handed Attack/Defense – Most Wing Chun hand and leg attacks can serve the dual function of attack and defense with a single motion, making them theoretically and strategically more complex while appearing and performing incongruously simpler. This is due to the system’s inherent pyramid structure; each activity is designed to suit a specific need and to reference the Centerline or a Blocking or Attack Line concerning the Centerline. Biu Jee Sau, Jing Jyeung, Chahng Jyeung, Chop Kuen, Gum Jyeung, Inside and Outside Whip or Diagonal Punches, Chau Kuen, Pau Jyeung, and many other Wing Chun multidirectional strikes can be used with the Kuen Siu Kuen principle. All these motions travel in three directions simultaneously, making them more challenging to block while also providing a deflective, penetrating, and wedging action. Even if the opponent blocks the multidirectional shot upward, downward, or to the side, momentum continues to flow in one or two other directions, allowing it to carom off the block and continue forward.