Rui understood what Headmaster Aronian was trying to say.
Most Martial Artists trained their bodies to their conventional limits, achieving the desired weight and muscle-mass-to-body-mass ratio before focusing on developing active techniques.
Active techniques were techniques that required the mind for cognition, usually to achieve necessary activation, commencement, coordination, timing, accuracy, or precision. Techniques like Outer Convergence, Flux Earther, Fire Breathing, and Reverberating Lance were such techniques.
Passive techniques were those that did not require the mind for anything. These were techniques that would be in effect even if the user was knocked unconscious. Most passive techniques were training techniques, often conditioning techniques that would permanently alter the body.