The gentle breeze once triumphs, and the white dew suddenly condenses. When the dew drops on the grass leaves drip, and when the refreshing cool breeze brushes against my cheeks, the sky becomes clearer and deeper, and the autumn atmosphere becomes thicker and thicker, a poetic solar term - white dew comes gracefully. September 7th this year is White Dew Day. In September, the lingering summer heat slowly dissipated, and the autumn wind carried a cool breeze from north to south. The forests between the mountains gradually dyed, and the fields were filled with the fragrance of fruits and melons. In a clear and clear sky, a refreshing autumn arrived. In the south, it is still summer, while in the north, it gradually becomes autumn with white dew, which is the fifteenth solar term among the twenty-four solar terms and also the third solar term of autumn. Every year around September 7th in the Gregorian calendar, when the sun reaches 165 degrees longitude, it enters the season of white dew. The Collection and Explanation of the Seventy Two Houhou of the Moon "records that" White Dew is the eighth lunar month. Autumn belongs to the metal element, which is golden and white, and the Yin energy gradually becomes heavier. Dew condenses and becomes white. "In ancient times, people used the four seasons to match the five elements, and the five elements corresponded to the five colors. Autumn belongs to the metal element, and gold corresponds to white. They used" white "to describe the dew in autumn, hence the name" White Dew ". At this point, the weather is gradually cooling down, but it is still hot during the day and the temperature difference between day and night is increasing. At night, water vapor condenses into droplets when it cools down, appearing crystal clear under the morning light. The ancients divided Bai Lu into three periods: the first period when geese came, the second period when black birds returned, and the third period when flocks of birds raised their shyness. Xuanniao refers to swallows; Shame "and" delicacy "refer to delicious food. At the time of the White Dew, it was the time for migratory birds such as geese and swallows to fly south to avoid the cold. The Jade Dew grew cool, and the birds keenly sensed the aura of killing and stored their food for winter, like precious delicacies. At the moment of white dew, autumn wind gradually rises, and dew gradually thickens. At this time, the summer monsoon is gradually replaced by the winter monsoon, and cold air moves southward frequently. In addition, the direct sunlight point moves southward, resulting in shorter sunshine hours and weakened sunshine intensity in the northern hemisphere. The night is usually clear and less cloudy, and the ground radiation dissipates heat quickly. The temperature drop also gradually accelerates. Therefore, there is a saying that "the night of the White Dew and Autumn Equinox is cold overnight". Our country has a vast territory and a large temperature difference between the north and south. At this time, the north is taking big strides towards autumn, while the south is still some distance away from true autumn. Overall, precipitation began to significantly decrease during the White Dew period, but the West China region is more unique as it is the season of "Bashan Night Rain Rising Autumn Pool". The autumn breeze not only brings coolness, but also brings news of harvest. The white dew is vast and the fields are covered in yellow millet. After a year of hard work in spring and summer, we finally welcome the pleasant harvest season. During the White Dew season, the Northeast Plain begins to harvest millet, soybeans, and sorghum, and the autumn harvest crops in North China have also matured. Cotton in the north and south of the Yangtze River is shedding cotton and entering the season of comprehensive batch harvesting. The joyful smile of a bountiful harvest is about to appear on the farmer's face with the morning dew. White dew is the season of harvest and sowing. At this time, winter wheat in the northwest and northeast regions begins to be sown, autumn planting in North China is about to begin, single season late rice in the Huang Huai region, Jianghuai region, and southern regions has already bloomed and filled, and double season late rice is also about to head. White dew is an important season that reflects temperature changes. When the weather reaches a turning point from hot to cold, one should pay attention to keeping warm and avoiding the cold when dressing Han Qiang, Deputy Chief Physician of the Reproductive Center at Beijing Hospital of Traditional Chinese Medicine affiliated with Capital Medical University, introduced that there is a saying in traditional Chinese medicine that "white dew does not expose the body, and cold dew does not expose the feet". This means that after the White Dew solar term, wearing clothes can no longer expose the body, especially for the elderly and children who should be careful not to catch a cold when sleeping. In addition, the temperature changes greatly during the White Dew solar term, and with the gradual growth of dryness, evil wind, and cold, special attention should be paid to moistening dryness and nourishing the lungs for health preservation. Drinking tea, sipping rice wine, and indulging in Bai Run Qiu Zao. Since ancient times, there have been many customs related to Bai Lu, which are often associated with "eating" and "drinking". In Fuzhou, Fujian, there is a custom of "eating longan with white dew". Longan itself has the effects of nourishing qi and spleen, nourishing blood and calming the mind, moisturizing and beautifying the skin. However, the longan before Bailu is large, has a small core, sweet taste and good texture, so it is best to eat longan during Bailu. In some parts of Jiangsu, Zhejiang, and Hunan provinces, it is customary to use glutinous rice, sorghum, and other grains to make wine and entertain guests at Bailu. This wine is called "White Dew Rice Wine", which is warm and slightly sweet. Tea lovers are even more looking forward to the "White Dew Tea" at this time. As the saying goes, "Spring tea is bitter, summer tea is astringent, and if you want to drink tea, autumn White Dew". The tea picked before and after White Dew has a unique sweet and fragrant aroma, which is neither as delicate as spring tea without soaking nor as dry and bitter as summer tea. There is a folk custom of "collecting dew" during the White Dew season, which means collecting dew. The ancients believed that crystal clear white dew had the effect of promoting longevity and beauty, so they collected the dew during the transition from summer heat to coolness and decocted medicine to aid in longevity. The Compendium of Materia Medica records that "when autumn dew is abundant, it is collected on a plate and fried like malt, which can prolong the life without hunger." "When autumn dew is applied to the heads of hundreds of herbs, it is collected before they are withered, which can cure various diseases, quench thirst, make the body light without hunger, and make muscles happy." It is also said that "dew on hundreds of flowers can make people have good colors. This reflects a beautiful wish of ancient people, "Han Qiang said." Collecting clear dew "has also become the most special ritual during the White Dew season. There is a custom of eating white dew in Wenzhou, Zhejiang and other places. On the day of Bailu, people will collect 10 herbs and ingredients with the word "white" in their names, such as Paeonia lactiflora, Paeonia lactiflora, Atractylodes macrocephala, Atractylodes macrocephala, White Lentils, White Lotus Seeds, White Grass Roots, White Yam, White Poria cocos, and White Sun Ginseng, and stew them with White Haired Black Bone Chicken for consumption. The 'Ten White' medicinal herbs vary in different regions, but most of them have the effects of nourishing yin and moistening dryness, clearing the lungs and strengthening the spleen, and dispersing wind and heat. Han Qiang said that people use this method to regulate their bodies to adapt to the climate characteristics of autumn. During the White Dew season, the temperature can still reach over thirty degrees Celsius during the day, but it is cooler at night with a large temperature difference between day and night. If it rains, the temperature drop will be more significant. In many regions, Bai Lu is the solar term with the largest temperature difference between day and night throughout the year. Therefore, it is important to avoid eating raw and cold foods as much as possible to prevent digestive problems Han Qiang introduced that traditional Chinese medicine believes that autumn is the best time to nourish and moisten the lungs. Only by nourishing the lungs well can the kidney qi be sufficient and diseases be reduced in winter. At this time, it is important to drink plenty of water and consume foods such as lilies, lotus seeds, Tremella fuciformis, pears, lotus roots, etc. that nourish yin and moisten the lungs in moderation to prevent autumn dryness. At the same time, the diet should be "less spicy and more sour", and some sour foods such as black plums and tomatoes should be eaten appropriately to benefit the stomach, nourish the lungs, generate fluids and stop dryness. Based on the characteristics of autumn, it is recommended to consume nutritious, easily digestible, and relatively light foods at this time, with a focus on nourishing the stomach and avoiding excessive emphasis on "sticking to autumn fat". Spicy foods should also be avoided as much as possible, and overeating should be avoided to avoid increasing the burden on the digestive system. Touch the scenery to prevent sadness, exercise and smooth the air. "Dew dipped vegetables and grass white, weather turns green and high. At the moment of white dew, the autumn mood is strong. Such a poetic and picturesque season can easily inspire the creative inspiration of literati and ink artists. Green, green the reed. dew and frost gleam. The saying 'Yi Ren is on the side of the water' in the Book of Songs creates a beautiful atmosphere of reeds turning green and white, and autumn colors becoming hazy; White dew grows on the jade steps, invading the stockings at night for a long time. But under the crystal curtain, I gaze at the autumn moon delicately. "At this moment, Li Bai, who was elegant and free spirited, seemed to have something on his mind. Without words, he stood alone on the jade steps, and the dew soaked the stockings. The clear moonlight could not conceal the faint sadness in his heart; The sound of a goose on the edge of autumn breaks the sound of people walking on the watchtower. The dew is white tonight, and the moon is bright in his hometown. "Hearing the watchtower and the sound of geese, Du Fu missed his distant brothers on a cold autumn night. After seeing many moons, he still felt that the moon in his hometown was brighter..." Since ancient times, autumn has been sad and lonely. "In the writings of literati throughout history, autumn is often associated with sadness and sorrow. The autumn atmosphere is solemn, and flowers, plants, and trees begin to wither. People are easily moved by the scenery and experience feelings of melancholy and sadness. Traditional Chinese medicine believes that the lungs correspond to the sadness in the five senses, and sad emotions are the most harmful to the lungs. "Han Qiang said that autumn is an important period for preventing sadness. During the White Dew season, it is important to pay attention to emotional regulation, maintain a calm state of mind, restrain oneself, avoid falling into depressive emotions, communicate more with friends, maintain a happy mood, and cultivate an optimistic and open-minded attitude. The Bai Lu season is a period of high incidence and easy aggravation of respiratory diseases, and appropriate exercise is an effective way to prevent disease outbreaks and alleviate the condition Han Qiang suggests that at this time, outdoor activities such as walking, jogging, aerobics, Tai Chi, Baduanjin, etc. can be appropriately increased according to personal hobbies and physical conditions. The exercise program varies from person to person during exercise, but it is not advisable to sweat excessively to prevent excessive release of yang energy. It is recommended that elderly people and those with weak physical conditions choose low load activities such as walking, Tai Chi, Eight Section Brocade, etc; Middle aged and elderly people can choose jogging, walking, square dancing, etc. After nightfall, Bai Lu often feels noticeably cool. At this point, the external yang energy gradually converges, while the yin energy becomes increasingly vigorous. The Yellow Emperor's Inner Canon records that the health regimen for autumn is "in the third month of autumn... lie down early and wake up early, and be invigorated by the rooster". Han Qiang stated that for Bai Lu health preservation, attention should be paid to converging yang qi, maintaining yin qi, adjusting reasonable living time, and aligning the body's qi with nature. It is recommended to go to bed early and wake up early at this time to help conserve yang qi, which is beneficial for the promotion of lung qi and the smooth flow of qi. The white dew is crystal clear, the sky is high and clear, let us feel the stability and heaviness of autumn together, and embrace the joy of harvest. (New Society)