The difference between early autumn and late autumn

The difference between early autumn and late autumn is that the morning in early autumn will be cooler; It will be very hot at night in early autumn. As the saying goes, it is freezing in early autumn. In late autumn, it's terribly hot. It's about the relationship between beginning of autumn and the hot and cold weather in the morning and evening. So everyone stared at beginning of autumn in the morning and evening of one day. According to the standard of dividing seasons by the average climate temperature, the average temperature for five consecutive days is below 22℃. According to this standard, the Jianghuai area generally enters autumn in the middle and late September.

The Historical Origin of beginning of autumn

Beginning of autumn is one of the "Four Stands" and the first solar term in autumn. The change of the whole nature is a step-by-step process, and beginning of autumn is a turning point in which the Yang gradually closes, the Yin gradually grows, and the Yang gradually gets cloudy. Among the 24 solar terms, beginning of autumn does not mean the end of hot summer. According to 24 solar terms's ranking, beginning of autumn is followed by a summer solar term. It was still very hot from beginning of autumn to the summer vacation, and I came out after the summer vacation. Since the summer vacation, the summer vacation has gradually subsided. After beginning of autumn, the Yin and Yang qi of nature began to change, and everything sank with the sun's qi, and began to move from luxuriance to maturity. In ancient agricultural society, beginning of autumn was of great significance to agriculture.

Phenological phenomena in early autumn

In some ancient China literary works, beginning of autumn is divided into three periods: one is waiting for the cool breeze; Second, wait for the white deer to be born; Three are waiting for cicadas to sing. This means that after beginning of autumn, people will feel cool when it is windy, and the wind at this time is different from the hot air in summer; Then, there will be fog on the ground in the morning, and cicadas will begin to sing in autumn when they feel gloomy.

In fact, in most parts of our country, the period from beginning of autumn to the summer heat is rather sultry, and there is no such phenomenon as "cool breeze", "white dew" and "chill". According to the order of the twenty-four solar terms, there is a solar term of summertime after beginning of autumn, which means summertime, but it hasn't been summertime in beginning of autumn. The so-called "heat is in three volts", and the last volt in the "three volts" is after the solar terms in beginning of autumn.

Traditional customs in early autumn

Beginning of autumn is not only an important solar term, but also an important Spring Festival. In ancient times, after the autumn harvest, people would choose the auspicious day of the zodiac, on the one hand, to worship and thank God and ancestors for their blessings, on the other hand, to taste the newly harvested rice grains and celebrate the hard-won harvest. There are folk customs of "beginning of autumn", such as "pasting autumn fertilizer", "biting autumn" and "gnawing autumn".