Chiang Huang-jung reminds us that different color crystals radiate waves of different frequencies. What one has to be careful about is that the qi field of each person is not the same and the same wave may be appropriate for one person while not appropriate for another. "Some people wear the wrong crystal, so the longer they wear it, the worse they get!"
江晃榮提醒，不同顏色的水晶會釋放出不同頻率的波動，要小心的是，每個人的氣場不同，不見得都適合，「有人戴錯水晶，結果越戴身體越不好！」