What is the solar term before Chushu?

What is the solar term before Chushu? There are twenty-four solar terms in my country, and Chushu is one of the twenty-four solar terms. In one of them, the weather is gradually getting cooler. The arrival of Sushu means that autumn has entered. So what is the last solar term of Sushu? Let’s take a look. What is the solar term before the end of summer 1

Introduction to Beginning of Autumn

Beginning of Autumn is the 13th of the twenty-four solar terms, and it falls on August 8 every year. Or the beginning of autumn on the 9th. "Autumn" means the end of summer and the beginning of autumn.

At the beginning of autumn, the sycamore trees must begin to lose their leaves, hence the idiom "One leaf falls to tell you how autumn is". Autumn includes six solar terms: Beginning of Autumn, End of Heat, White Dew, Autumnal Equinox, Cold Dew and Frost. It is a transitional season from hot to cool, and then from cool to cold.

The beginning of autumn is when the sun reaches 135° of ecliptic longitude on August 7 or 8 every year. "Collection of the Seventy-Two Hours of the Moon Order": "On July Festival, the word "Li" means spring (beginning of spring). Autumn means pulling, and things are pulled here." The beginning of autumn generally indicates that the hot summer is about to pass, and autumn is about to come. advent. Although the heat is not going away for a while after the beginning of autumn, and there is still the lingering power of the "autumn tiger", the beginning of autumn is also called the second autumn, but the general trend is that the weather gradually becomes cooler.

Introduction to Chushu

Chushu means "going out of heat" to leave the heat. Chushu is the 14th solar term among the 24 solar terms of the lunar calendar. The intersection time is around August 23 of the Gregorian calendar, when the sun reaches 150° of the ecliptic longitude.

The end of summer solar term means the beginning of autumn with meteorological significance. After the end of summer, the temperature in the area north of the Yangtze River in China gradually drops. At this time, the sun was moving close to the star Regulus in Leo. When viewing the Big Dipper at night, the curved handle of the dipper still points to "Shen" (southwest direction). When the sun reaches 150° of ecliptic longitude, it is the end of the 24th solar term in the lunar calendar. The end of heat is a solar term that reflects changes in temperature. "Chu" means hiding and ending, and "Chu" means the end of the hot summer day.

"The Collection of the Seventy-Two Hours of the Moon Order" says: "Chu means to go, and the heat will stop here." "Chu" means termination, which means that the heat is about to pass, and the heat will end on this day. At the end of the day, the temperature gradually dropped in most parts of China. Chushu is different from minor heat, major heat, minor cold, and major cold. It is a solar term that represents the transition from hot to cold.

China divides the period of summer into three periods: "The first period is when the eagle is offering sacrifices to birds; the second period is when the heaven and earth begin to be quiet; the third period is when the crops are harvested." In this solar term, eagles begin to hunt birds in large numbers; everything in the heaven and earth begins to Wither; the "禾" in "禾 Nai Deng" refers to the general name of crops such as millet, millet, rice, and sorghum, and "Deng" means mature.

The season has reached the end of summer, and the temperature has entered a stage of significant change, declining day by day, and the heat is no longer overwhelming. The climate characteristics during the summer season are hot during the day, cool in the morning and evening, large temperature difference between day and night, low precipitation, and low air humidity. In such an environment, people are prone to dryness of the mouth and nose, dry throat, and burnt lips. Therefore, don't add too many clothes, avoid covering up, but don't get too cold either. Therefore, you should pay attention to preventing dryness during this season, and make careful adjustments to your diet and daily life.

The average temperature during the summer heat is generally about 1.5°C lower than that at the beginning of autumn. In some years, in late August in western South China, the average daily temperature may be below 23°C for more than three consecutive days, affecting the flowering of hybrid rice. However, since the summer heat in South China is still basically controlled by the summer monsoon, the maximum temperature in western South China often exceeds 30°C and in eastern South China exceeds 35°C. What is the solar term before the end of heat? 2

The end of summer is the fourteenth solar term, and the solar term before the end of heat is the thirteenth day of Beginning of Autumn.

"The Beginning of Autumn" has arrived, but it does not mean that the autumn weather has arrived. The climate seasons are divided according to the "climate average temperature", that is, when the local average temperature is below 22°C for 5 consecutive days, it is considered the true autumn season. China has a vast territory. Although the climate varies from place to place, most of the weather has not yet entered autumn at this time. Moreover, the last day of the hot dog days of summer is still on the third day after the beginning of autumn.

Especially in southern China, this solar term is still the summer heat. At the same time, as the typhoon rain season is gradually gone, the temperature is even hotter. Therefore, Chinese medicine calls the period from the beginning of autumn to the autumnal equinox " Long summer".

According to the standard for dividing seasons according to the average climate temperature, autumn must be when the average temperature for five consecutive days is below 22°C. According to this standard, the Jianghuai region generally enters autumn in mid-to-late September. After the beginning of autumn, although the heat is hard to get rid of for a while, and although there is the lingering power of "autumn tiger", the general trend is that the weather gradually becomes cooler. The diurnal temperature range gradually becomes more apparent, with the days often being very hot and the nights being cooler. In addition, the meaning of autumn also means that crops are about to mature.

Why does the beginning of autumn come before the end of summer?

The beginning of autumn is on August 7, 8 or 9. The Beginning of Autumn generally heralds the end of the hot summer and the coming of autumn. After the beginning of autumn, the heat still lingers for a while, but the general trend is for the weather to become cooler. Due to different climates across the country, the start of autumn is also inconsistent.

Climatologically, autumn begins when the daily average temperature drops steadily below 22°C every five days. This division method is more in line with the reality in most areas. The summer festival falls on August 23 or 24 every year. It means that the hot summer is coming to an end. This is how it is divided in climatology.