20 solar terms and 24 formulas

The formula of the twenty-four solar terms is that the spring rain shakes the spring and clears the valley, and the summer is full of heat. Autumn dew, autumn frost, little snow in winter and cold in winter.

Twenty-four solar terms are the product of agricultural civilization and the knowledge system formed by ancient ancestors by observing celestial movement combined with geographical climate and phenological laws. It contains a long cultural connotation and historical accumulation, and is an important part of the long history and culture of the Chinese nation.

Four years old, three months in spring, summer, autumn and winter, two solar terms each month, each solar term has its own unique meaning. Twenty-four solar terms accurately reflect the change of natural rhythm and play an extremely important role in people's daily life. It is not only a seasonal system that guides agricultural production, but also a folk system that contains rich folk customs. In the field of international meteorology, the 24 solar terms are considered as the fifth invention of China.

Solar term month

December is a solar month based on 24 solar terms, and the division of December is based on solar terms, that is, beginning of spring, Jingzhe, Qingming, Changxia, Mangzhong, Xiaoshu, beginning of autumn, Bailu, Hanlu, beginning of winter, Daxue and Xiaohan are respectively regarded as silver moon, Uzuki, Chen Yue, Mitsuki, noon, late spring, Shen Yue, Moon and Slight Cold. A dry branch builds a dollar, starting with yin.

Taking the direction pointed by bucket handle, the Big Dipper, as the standard for determining the month is called sword fighting (also called Jian Yue). The barrel handle rotates clockwise once, indicating one year old (figure). The buildings in December are: Yin in the first month, Mao in February, Chen in March, Si in April, Wu in May, Wei in June, Shen in July, You in August, Xu in September, Hai in October, Zi in November and Ugly in December.

Refer to the above content: Baidu Encyclopedia-Twenty-four solar terms