I. Poetry
1, I was shocked at first, but I met beginning of autumn's "New Autumn" Tang Qiji, who was ill at night and had few dreams. In his spare time, beginning of autumn thinks more about "Qiu Si" Tang Dynasty, while the hedge falls in autumn to see tofu pudding, and the bamboo gate is near the water.
2. The mountains and clouds are absolutely blocked, and the fire flows west. There is a work in the autumn rain garden. Du Fu in Tang Dynasty, the fragrant grass is half ripe, and the original grass is slightly declining. In the new autumn, don Miracle, the dew is clear, while Fan Pukui and Bitang Bai Juyi are still light.
Second, the historical origin
1, beginning of autumn, is one of the "four stands", which means that autumn begins, the grain begins to mature, and the harvest season has arrived. "Li Shu" said: "Dou is the beginning of autumn in the southwest, and Yin is the beginning of all things. According to the instructions of autumn, the grain is ripe. " "Shuo Wen Jie Zi": "Autumn, five grains are ripe."
2. The change of the whole nature is a step-by-step process, and beginning of autumn is the turning point when the yang gradually closes and the yin gradually grows. As Guanzi said, "Autumn begins in Yin Qi, so everything gains." There are "three summers" in the 24 solar terms, that is, little summer, big summer and midsummer, which are early summer, heatstroke and late summer respectively.
3. There is also a "beginning of autumn" solar term in the middle of the "Three Summers", followed by beginning of autumn is summer (the last summer). "Three summers" and "three days" both represent hot and humid weather, and the summer days in the 24 solar terms are longer. Long summer is beneficial to the growth and yield of crops, and crops should have enough growth time and heat. If the high temperature time in summer is short, the growth time and heat of crops are not enough.
4. Growth and yield will be affected. Twenty-four solar terms are the product of ancient farming civilization and the reflection of farming culture on festivals. Beginning of autumn marks the official start of the Qiu Meng season, which is the third solar term after the Great Summer and the Minor Summer. After beginning of autumn, the weather is still very hot. Traditional Chinese medicine calls the period from beginning of autumn to the autumnal equinox "long summer".
5. 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 lush to mature. In the ancient agricultural society of China, beginning of autumn was of great significance. People sacrifice their land in early autumn to celebrate the harvest.
Third, the division of seasons.
Solar Term Method: The traditional method of dividing the four seasons takes "Li Si" in the 24 solar terms as the starting point of the four seasons, so beginning of autumn is the starting point of autumn. Bucket refers to beginning of autumn in southwest China. When the sun reaches longitude 135, it starts in the beginning of autumn and ends before beginning of winter in autumn. Beginning of autumn means that the sun be the spirit gradually closes, the yin be the spirit gradually grows, everything begins to move from luxuriant to mature, and the harvest season has arrived.