How can "The Cheng Hsin Principles" be applied to kicking?
The same way they are applied to anything else. Move the leg from the center of the body, stay relaxed throughout and move the whole body into the kick. The last point is unusual in most kicking arts since usually people counter leg movements with their upper body and arms to balance the motion of the lower. I suggest not doing this, but instead move upper and lower body in the same direction. This will take some getting used to and you'll have to find a new way to stay balanced, but it isn't too difficult once you work it out. When the foot comes to the target, continue the motion into it and allow the body to be compressed into the foot you're standing on. One piece of advice I give people in kicking is not to try to "kick" but simply place or put their foot somewhere. Stay relaxed and let it drop as soon as it's free. One thing people seem to overlook is that when kicking you are on one foot (at most) at a time. This reduces mobility and the ability to make subtle and quick changes, so timing and awareness of the relationship is