The beginning of Autumn indicates that the summer heat is gone and the coolness is coming, the beginning of fall. It is a festival that reflects the seasons.

The beginning of Autumn indicates the end of summer and the beginning of fall. It is a festival that reflects the seasons. Autumn begins on August 7 or 8 every year when the sun reaches 135° of the yellow meridian. The word "立" means "beginning" and "秋" means the period of ripening of crops.

Autumn is introduced as follows:

According to the Monthly Record of Seventy-two Waiting for the Collected Explanations: "Autumn, pulling is also, things in this and pulling the convergence of also". Autumn is not only a sign of the hot summer is about to pass, autumn is coming. Also indicates that the grass began to fruit pregnant, the harvest season has arrived. At this time the central region of China's early rice harvest, late rice transplantation, large autumn crops into the important growth and development period.

The ancients regarded the beginning of autumn as an important moment at the turn of summer and autumn, and have always attached great importance to this festival. According to records, in the Song Dynasty, the day of the autumn palace to be planted in the basin of the sycamore moved into the temple, until the "Autumn" hour, the historian will be loudly played: "Autumn came." After playing, the sycamore should fall one or two leaves, in order to symbolize the meaning of the fall.

More introduction is as follows:

The beginning of autumn means that precipitation, humidity, etc., are at the turning point of the year, tending to decline or decrease. Starting from the beginning of autumn, yang qi is gradually collected, all things inward. Autumn and spring, summer, winter and known as the "four Li", is also one of the ancient "four times eight sections". Autumn is the season of grain ripening and harvesting. In ancient times, when autumn began, the folk had the custom of sacrificing to the land god to celebrate the harvest. There are also customs such as applying autumn fat and biting autumn.

Long summer days are favorable for crop growth and yield, crops need to have enough growing time and heat, if the summer heat is short, the crops do not have enough growing time and heat, the growth and yield will be affected. The twenty-four solar terms are the product of ancient farming civilization, which is the reflection of farming culture for the festival.

As follows:

Dividing the climatic seasons is based on the "average temperature", i.e., the average temperature of the local area for five consecutive days is below 22 degrees Celsius, and only then is it considered to be the real fall season. China's vast territory, although the climate varies from place to place, but at this time most of the climate is still not into the fall, and every year, the end of the three hot days of ambush is still in the third day after the fall.