Since ancient times, there have been 24 solar terms in Song Dynasty, so what is this?

Twenty-four solar terms are traditional folk festivals in China. As early as the Zhou Dynasty and the Spring and Autumn Period, the summer solstice, winter solstice, vernal equinox and autumn equinox were determined by measuring the sun shadow with soil gauge. Twenty-four solar terms mean dividing a year into twenty-four equal parts and giving each equal part a name. This is the origin of twenty-four solar terms. Later, the twenty-four solar terms were compiled into songs, which were called twenty-four solar term song for short.

"Twenty-four solar term song" is a small poem compiled for the convenience of remembering the twenty-four solar terms in the ancient calendar of China. So far, many versions have been circulated, which embodies the labor wisdom of the working people in ancient China. Twenty-four solar terms are the original cultural heritage of working people in China, which can reflect the changes of seasons, guide agricultural activities and affect the food, clothing, housing and transportation of thousands of households.

Also derived a poem. The earth goes around the sun, and it takes a year to complete a circle. A year is divided into December, and the 24 solar terms are closely linked. According to the Gregorian calendar, these two gases will not change every month. The first half of the year is June 2 1 day, and the second half is August 23 every year. These are festivals, and the difference is only one or two days. In the twenty-fourth section, I remember the following formulas in my mind: a slight cold followed by a severe cold in January, and a rainy day in beginning of spring in February; The vernal equinox is in March and Qingming Grain Rain is in April. Long summer and full summer in May, full summer solstice in June;

July is hot and slightly hot, and August is long summer, beginning of autumn; In September, the Millennium meets the autumnal equinox, and the first frost and cold dew are all in October; There is a light snow in 1 1 month in beginning of winter, and a heavy snow in winter solstice to welcome the New Year. Grasp the season and busy production, sow and harvest in time to ensure a bumper harvest. The 24 solar terms are the crystallization of the wisdom of the ancient working people in China, and they are one of the most brilliant achievements in China's 5,000-year-long history and culture.