China Naming Network - Fortune telling knowledge - What does it mean to rain on the White Dew Festival?

What does it mean to rain on the White Dew Festival?

There is a folk saying that there is continuous autumn rain around "Bailu", which is called "rotten Bailu"; At the same time, there is a "once in a thousand years" rain, which will rain all autumn; The' White Dew' comes out of the sun, and the whole autumn is crisp. In this regard, meteorologists have said that there is no scientific basis for the saying of "rotten white dew", and the factor that ultimately determines the weather is atmospheric circulation.

During the white dew, the summer monsoon is gradually replaced by the winter monsoon, and the cold air changes from defense to attack. In addition, when the direct point of the sun moves south, the sunshine time in the northern hemisphere becomes shorter, the light intensity weakens, and the ground radiation dissipates heat quickly, so the cooling speed gradually accelerates. The Millennium basically ended the sweltering heat in summer, and the weather gradually turned cold, and the cold gave birth to dew condensation. The ancients used four seasons to match five elements. Autumn belongs to gold, gold and white alternate with each other, and autumn dew is described in white, hence the name "White Dew".

According to the observation of nature, the ancients in China divided the Millennium into three stages: "When the geese come, the mysterious birds return, and the birds are ashamed." This means that in this solar term, migratory birds such as Hongyan and Swallow fly south to avoid the cold, and hundreds of birds begin to store dried fruit food for the winter. At present, farmers are also busy harvesting crops. As the saying goes, "If you grab autumn, you will lose it." During the Bailuyuan period, local folk customs mainly included offering sacrifices to Dayu, brewing grain wine and drinking Bailuyuan tea.

Historical origin

Twenty-four solar terms are special festivals in the calendar to express natural rhythm changes and establish "December construction". Four years old, three months in spring, summer, autumn and winter, two solar terms each month, each solar term has its own unique meaning.

The Millennium is the fifteenth of the twenty-four solar terms, which marks the end of the Qiu Meng season and the beginning of the Mid-Autumn Festival, and is an important festival reflecting the temperature changes in nature. According to the explanation of "white dew" in the twenty-four solar terms-"water and soil condense dew, autumn belongs to gold, golden white and white dew, and qi begins to be cold". ?

The almanac says that "the bucket refers to the dew, the yin is getting heavier, and the mausoleum is the dew, hence the name". Entering the "White Dew", the most obvious feeling is that the temperature difference between day and night is large, and it will feel a little cold at night. Although the summer heat may not leave at once, the sultry feeling will gradually fade away, adding a coolness of autumn in the morning and evening.

As the weather turns cold, the sun is still hot during the day, and the sun returns to the mountains, and the temperature drops rapidly. White dew, the summer heat gradually disappears, the yin of heaven and earth rises and disperses, the night gets colder, the temperature difference between day and night widens, and the cold produces dew condensation, which is one of the reasons for "white dew".