The three months of autumn are appearance stability. The heavenly qi is swift and harsh, and the colors of the earth are solemn and clear. A man should sleep early and get up early with the cocks, so as to make the mind calm and to moderate the harsh autumn qi. He should astringe the spirit to make the autumn qi safe for him, and should not expose his mind so as to make the lung qi clear. These behaviors are responses to the autumn qi, and ways of nourishing harvest. If he is disobedient to these, the lungs will be hurt, and Diarrhea containing undigested foods will occur in the winter, because of a bad basis for winter storage.
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