From Introduction: This product details feats, which represent a forceful, aggressive martial art. The forceful martial art combines purity of form, or finesse, with cold, focused aggression and knowledge of physiology, which, with minimum force, produces excruciating and crippling results. Force does not encompass a concept of passive defense. Its roots lie in an ancient martial culture that possessed no notion of retreat or weakness. This is a hard pressing, aggressive martial style that affords the opponent no quarter. Its effectiveness and ruthless nature endear it to those who would use it as a means of dispatching multiple enemies with very little effort.