Meditation on the sound is the best because it is our layer of protection. Vibration from the Sound eliminates all negative influence on us, rinse any bad magnetic field and block any outside atmosphere that is not good for us. The Guan Yin Method is truly a blind friend and fervent lover, driving away anything that is bad and harmful to us. It protects us so well that even when we give something to others, it won’t let us see the beneficiary to keep us free from arrogance. The Guan Yin Method is the greatest! If we meditate on light alone and don’t do sound meditation which sends out be the interference wave, we may know too much about right or wrong, good or bad, disturbing our nature. The Guan Yin Method keeps us from knowing good and bad and become less and less discriminating , therefore our ego will not easily grow.