According to scientific evidence, the five tones of traditional Chinese medicine are angle, sign, palace, business and feather. They belong to wood, fire, soil and water respectively, corresponding to the five internal organs, liver, heart, spleen, lung and kidney of human body. It means that the sound of the horn nourishes the liver, the tone nourishes the heart, and so on. It can affect the qi movement of human body, pacify yin and yang, regulate qi and blood, maintain the dynamic balance of qi in the body, and maintain human health. It belongs to health-preserving music.

However, your friend exaggerates the fact that the fun of health preservation lies in health preservation, not in treatment. If you are sick, you still have to see a doctor to avoid delaying your illness.