Beginning of autumn is the first 13 of the 24 solar terms and the first solar term in autumn. On August 7th or 8th every year, beginning of autumn is regarded as the time when the sun reaches the longitude135. Beginning of autumn's "standing" is the beginning, and "autumn" refers to the period when crops are ripe, that is, the summer comes to cool. It marks the official start of the autumn season.

When I was in beginning of autumn, the Beidou pointed southwest. The solar ecliptic is135. From this day on, autumn begins, the autumn is crisp, the moon is bright and the wind is clear. Since then, the temperature has gradually decreased from the hottest. There are three seasons in beginning of autumn, namely, cool breeze: when it is windy, people will feel cool, and the wind at this time is different from the hot wind in summer. White dew falls: there will be fog on the earth in the morning. Cicadas chirping: Cicadas chirping in autumn are also chirping.

Beginning of autumn temperature difference introduction:

Generally, in some basin areas, it will not enter autumn until the middle and late September; In some mountainous areas, it may be winter all year round or winter is long without summer, and spring and autumn are connected, so the start time of autumn in these places is not very accurate. After beginning of autumn, the late rice in the basin is jointing and booting, and cotton bolls are cracking and bolls are spitting. During this time, the management of the field cannot be relaxed, and some preparations should be made to guard against the harm of hail, strong wind and heavy rain.

In the eastern and western parts of some basins, it is necessary to do a good job of drought and flood control in advance. Although the basin after beginning of autumn is still in the midsummer season, a golden "autumn" of "beginning of autumn is full of yellow in ten days" is coming.