Autumn, in the spirit of nourishment should comply with the characteristics of the season, “spring and summer long fall harvest and winter storage.” Therefore, in the fall to “harvest” as the key to achieve “tranquility of mind”, so as to alleviate the impact of the solemn killing of the human body, in order to adapt to the characteristics of the fall. How can we maintain a tranquil state of mind? Simply put, it is to be “clear mind and little desire”. Selfishness is too heavy, more than lust will destroy the tranquility of the divine energy. In real life, it is required that people put more energy in the work, smooth temperament, and do not “fight for fame in the morning, fight for profit in the city”. In addition, the fall is certainly high in the sky, fruitful, pleasant, but inevitably, there is also a “miserable wind and rain”. Nature’s autumn winds, autumn rain often makes people feel autumn sorrow. Especially the elderly, they often have depression, bleak, dying feeling, if you meet the unsatisfactory things, very easy to lead to depression. This has been proved in physiological research, in the human brain, there is a gland called the pineal gland, secretion of a “melatonin”. This hormone can induce sleep, can make people feel depressed, and sunlight can make melatonin secretion decrease. At the same time, melatonin also inhibit other hormones in the body (such as thyroxine, adrenaline), the relative reduction of thyroxine and adrenaline, will make the cells lazy paralyzed, thus making people moody, sentimental. For this reason, the ancients believe that the spiritual health of the fall should be “so that the peace of mind, to slow down the punishment of autumn, convergence of the spirit, so that the autumn Qi Ping, not outside its will, so that the lungs are clear, this should be the autumn Qi.” That is to say, with a normal heart to see the changes in nature, or go out in the fall, to see the distance, so that the heart is relaxed; or meditation and practice gas, convergence of the mind, to maintain inner peace; more outdoor activities to receive more sunlight, so as to transfer the low mood.