The origin of beginning of autumn: beginning of autumn is one of the twenty-four solar terms and the product of ancient farming civilization. It is a knowledge system formed by ancient ancestors following the farming season, observing the movement of celestial bodies and understanding the changing laws of seasons, climate and phenology throughout the year.

The twenty-four solar terms were originally formulated according to the changes of stars. The Big Dipper rotates once and bucket handle rotates once clockwise, which is called one of the "years" (Figure). The current "twenty-four solar terms" are formulated according to the position of the sun on the ecliptic, that is, the annual movement track of the sun is divided into 24 equal parts, each 15 is 1, and each 1 is a solar term. Beginning of autumn refers to beginning of autumn when the sun moves southward from the Tropic of Cancer to 135.

Early autumn custom

1, Celebrating the Harvest: Due to the ancient farming civilization, every household has to harvest early rice and transplant late rice every early autumn.

2, paste autumn fertilizer: after the summer heat, people are used to eating more meat, supplementing the deficiency caused by poor appetite and sweating in the dog days, and improving immunity.

3. Eat autumn peaches: In early autumn, adults and children should eat autumn peaches, one for each person, and keep the stone after eating. On New Year's Eve, the peach pit was thrown into the stove and burned to ashes. It is thought that this will save the plague for a year.

4. Weigh people by hanging scales: In the Qing Dynasty, people weighed themselves in early autumn to test their obesity. If they have experienced a "bitter summer", if they have lost weight, they should supplement more nutrition.

5. Eat Fuyuan: beginning of autumn is the rich period of longan in Taiwan Province Province, and longan is also called Fuyuan. There is an old saying: people will eat Fuyuan on this day when they have children and grandchildren.