After 1, in beginning of autumn, the yang turned to decline, the yin became stronger, and the nature began to change from growth to collection. According to the principle of keeping in good health at four seasons, yin qi is nourished in autumn and winter.

2. In the dry autumn, qi dryness hurts the lungs, and lung qi deficiency reduces the body's tolerance to bad stimuli, which is easy to cause diseases, because it needs to moisten dryness, nourish yin and moisten the lungs.

3. According to the theory of Five Elements Prosperity, the liver, heart, spleen and stomach are in a weak stage at this time, while the lung function is in a vigorous stage after beginning of autumn. According to the principle of harmonizing yin and yang and balancing the body, it is necessary to strengthen the aftercare of these organs, so that the lung qi will not be too biased and affect the health.

4. After beginning of autumn, we should "increase the acidity" in our diet to increase the function of the liver and resist the invasion of excessive lung qi. The following foods are available: apples, grapes, carambola, grapefruit, lemon and hawthorn.

5. In autumn, in terms of diet conditioning, we must first follow the principle of "nourishing yin in autumn and winter" proposed by Huangdi Neijing, that is to say, we should eat more foods that nourish yin and moisten dryness to prevent autumn dryness from hurting yin. There are the following kinds of diet: tremella, pear, sesame, lotus root, spinach, soybean milk, duck eggs and honey.