With the development of mankind, the satisfaction of material and the progress of science and technology, there are fewer and fewer diseases. Why are they increasing instead of decreasing? The root cause is greed, anger, ignorance, slowness, doubt, and too much negative energy, which leads to physical and mental disconnection, lack of energy, inversion of yin and yang, and lack of inner emptiness. Doctors in ancient times were very poor. They help patients solve big problems in small ways.