In the month of Gua Xu, Cold Dew is the fifth solar term of the fall season. When the sun reaches 195 degrees of yellow longitude, it is called Cold Dew. Cold dew indicates that the late fall has arrived, the yang is gradually less, more yin, for the typical cool and dry season. In terms of nourishing the heart, it is advisable to have an open mind to eliminate autumn sorrows. At this time, the temperature is lower, coupled with the autumn winds of killing gas, easy to accumulate in the heart, but also easy to hurt the lungs. Therefore, after work, it is advisable to increase physical and cultural activities to maintain optimism. Nutrition, first, should keep warm, especially the back and feet should keep warm. Second, the diet should nourish yin and moisturize dryness, it is advisable to eat Zhih, glutinous rice, round-grained rice, honey, milk, pear, bananas, cantaloupe, grapes, pimientos, persimmons and so on. Cold dew should prevent colds, asthma, hypertension, coronary heart disease, back pain.