|Taekwondo Bible, Vol.2||
7-3-1. Generality of Kang-Principle
This principle is applicable equally to all kinds of war. Therefore, ¡°in order to achieve the ultimate objective of a war you should concentrate superior power on a decisive place and time. Concentration demands economy, and for the concentration of superior power on a decisive point you must assign only the least and necessary power to another points except the decisive one.¡±1) Likewise "for such a (good) attack you should be able to have both mind and body strengthened evenly, which bring you the reconciled power, and should be able to move all parts together in the most proper manner once you move. And finally, all movements when concentrated on a motion make a right motion of Taekwondo. An attack of hitting an opponent appears as a both peripheral and essential aspect of this moving all, and this attack is powerful and fierce."(Ch.36)
What reason demands concentration? "Man's body is so mysterious that you can get control over your opponent's whole body only controlling over a finger of his and can fell him down only hitting a small part of his. Although it is not easy to attack his center it is always possible to connect your attack of the easiest point to that of his center."(Ch.25) Therefore, you can subdue your opponent easily with concentration of your strength and technique on a decisive point that can cause the destruction of his entirety. This is the logic of Kang-technique.
Therefore, just as the general ¡°should know a decisive point in all kinds of battle field of any case,¡±2) so you as a Taekwondo man must know there is a decisive point in every fight. This decisive point is the empty center of the opponent in Taekwondo. Accordingly, just as "in maneuver of military force the commander must know the subtle principle of dispersion and concentration of troops¡±3) so you as a Taekwondo man should know the subtle principle of dispersion and concentration of strength.
The Abkubi Momtong Jireugi of Taekwondo is a typical example of Kang-technique, which represents the figure of concentration visually. It is a wedge-shaped triangle.
The principle of Kang is applicable not only to techniques like Jireugi but also those like kicking or joint locking. Particularly, joint locking is sometimes categorized as a Yu-gi(technique) by some kinds of martial arts, which is wrong. Its basic principle is that you concentrate your strength on the weak part of the opponent to break his joint; It ought to be called a Kang-gi(technique).
1) ³ëº´Ãµ, ¡ºµµÇØ ¼¼°èÀü»ç¡», µµ¼ÃâÆÇ ÇÑ¿ø(1990), 43ÂÊ.