How much does Chinese medicine know about health?

Chinese medicine's understanding of human health is closely around the normal state of people to judge. Eating and sleeping are normal, I feel very happy, and I don't feel uncomfortable. Harmony with the laws of heaven and earth makes people disease-free. Deviation leads to disharmony, and disharmony leads to disease. The standard is not fixed, such as exercise: it is normal for children to move more than the elderly. It is normal for children to move, and it is normal for the elderly to be quiet. The children are so quiet that they don't want to play with others. It is not normal for a person to be in a daze. It is normal for old people to fall asleep often when sitting alone. A person's life is like four seasons, with the ups and downs of vegetation.