What does the Millennium mean? The origin of the millennium solar terms.

Millennium is the third solar term in autumn, marking the end of Qiu Meng and the beginning of Mid-Autumn Festival. It is recorded in the Book of Rites: "When the cool wind comes, the dew falls, and cicadas sing cold." The image describes the weather changes around the Millennium.

From an astronomical point of view, when the sun reaches the meridian 165 degrees, the temperature drops gradually, and the temperature difference between day and night can reach more than ten degrees.

From the summer solstice, the yang will reach its peak, and the extremes will be reversed. At this time, the yin will also rise. In September, the yin is getting heavier and the morning dew is getting thicker and thicker, which can condense into white water drops, hence the name "Bailu".

According to the simple concept of the five elements, autumn belongs to gold, and white also belongs to gold, and the dew condensed by the temperature drop is white, so the name "White Dew" is more practical.

Extended data:

I. Weather conditions

After plants began to have dew entering the Bailu solar term, summer monsoon was gradually replaced by winter wind, cold air turned to attack, and warm air gradually retreated. Cold air going south in batches will often bring a certain range of cooling. People like to use the proverb "it's cold in the autumn night in the white dew" to describe the situation that the temperature drops rapidly.

At this time, the precipitation in northern China is obviously reduced, and the autumn is crisp and dry. During this period, the first autumn rain in the middle and lower reaches of the Yangtze River can often alleviate the previous water shortage. However, if the cold air meets a typhoon, or the cold and warm air are evenly matched, the two sides are in a dilemma, and heavy rain or low temperature and continuous rain are not good for the growth of autumn crops.

Continuous rainy weather often occurs in the eastern part of Southwest China, South China and West China. There may be heavy rain caused by tropical weather system (typhoon) in the southeast coast, especially in the south China coast. In addition, autumn drought, forest fire and first frost may also occur in some areas at this time.

In some northern areas, such as Shaanxi, Shanxi, Gansu, North China and other places in the northwest, autumn precipitation is inherently less. If severe autumn drought occurs, it will not only affect the harvest of autumn crops, but also delay the sowing and emergence growth of autumn sowing crops and affect the harvest of the following year. In addition, with the autumn drought, especially the dry air and the increasing wind in mountainous forest areas, the forest fire risk in autumn began to enter a period of high incidence.

Second, folk customs.

Millennium is a typical autumn climate, which is prone to dry mouth, dry lips, dry nose, dry throat, dry stool and chapped skin. There are many ways to prevent autumn dryness, and you can eat more foods rich in vitamins.

You can also choose some traditional Chinese medicines, such as ginseng, adenophora adenophora, American ginseng, lily, almond, fritillary bulb, etc., which have a good effect on relieving autumn dryness. For the general public, simple and practical medicated diet and dietotherapy seem to be more acceptable.

Covering spring and freezing autumn is a classic key to health preservation. Of course, autumn freezing is not suitable for everyone. The local blood supply of diabetic patients is poor. If the blood vessels are stimulated by cold air at once, it is easy to have vasospasm and further reduce the blood flow.

It is easy to cause tissue necrosis and diabetic foot, often accompanied by diabetes and cardiovascular and cerebrovascular diseases. Cold air stimulation is more likely to induce cardiovascular and cerebrovascular diseases and even lead to myocardial infarction. Therefore, it is best for diabetics not to get cold in autumn.

References:

Baidu encyclopedia-white deer

Public trust. Com- the arrival of the Millennium: dress without revealing your figure and pay attention to your diet.