1. The outbursts of evil qi, the excessive wind and rain, and the delayed dew make grass and trees wither.
2. Evil winds and violent downpours happen frequently. The disorder of heaven, earth, and the four seasons disrupt the regular growth of all things and they all die be fore reaching half of their life span.
3. Only a sage can adapt himself to the changes in nature. He heeds the ways of preserving health so he does not suffer from serious illness. If all things know the ways of preserving health, their energy will not be drained.
Learn more about the theory of Chinese medicine, please read Disorder Activity of Qi.