On the left is hair growth, and liver qi is the main ascending. The right side is mainly descending, and the lung qi is mainly descending. Therefore, it is considered that it is the most difficult to reduce dragons and tigers in Taoist health preservation. In other words, it is the most difficult to adjust the rise and fall of human qi. The same is true for treating diseases. If we can master this qi machine, we can cure the disease. If you are listless all day, there is something wrong with your hair. So what caused the problem of hair growth? Chinese medicine believes that there is nothing to grow because the kidney essence dissipates too much because it is not hidden enough in winter. This is called aquatic wood in Chinese medicine. If you don't hide enough things in winter, the wood won't grow. China culture must look at the first three steps and the last three steps, not just the present. The same is true in the treatment of diseases. Where the diseases are, we cannot treat them there. What Chinese medicine says is that the disease is not cured and the disease is not cured. It means don't wait until you get well, but take precautions before you get sick and find the root of the problem.