The weather is getting colder in autumn and winter, which belongs to "yin". At this time, nourishing yin is mainly based on "harvest". After autumn comes, the air becomes dry, the body is very easy to get hot and dry, and the skin may become dry. At this time, the importance of "autumn harvest" is reflected. People often say that "autumn is lacking" because the temperature in autumn begins to change, and people's emotions are easy to suppress, which will also cause the phenomenon that they are not interested in anything.
The three months of autumn are called tolerance, and the natural scene is calm and convergent because of the maturity of everything. At this time, the sky is high and the wind is urgent, and the atmosphere is clear. The three months of winter, known as "closed doors and hiding", are the season when vitality lurks and everything hides. At this time, Shui Han was frozen and the earth cracked. According to the weather changes in nature, people should keep healthy like nature.