During the Spring Festival, with the sound of thunder and rain, several solar terms appeared.

There are two solar terms, namely beginning of spring and solar terms. Solar term is a special festival in the trunk and branch calendar that expresses the change of natural rhythm and establishes "December construction" (monthly order).

The 24 solar terms are: beginning of spring, Rain, Sting, Equinox, Qingming, Grain Rain, Changxia, Xiaoman, Mangzhong, Summer Solstice, Xiaoxia, Daxia, beginning of autumn, Early Summer, Bailu, Autumn Equinox, Cold Dew, Early Frost, beginning of winter, Light Snow, Heavy Snow, Winter Solstice, Slight Cold and Severe Cold.

Among the solar terms, beginning of spring, Jing Zhe, Qingming, Long Summer, Mang Zi, Xiaoshu, beginning of autumn, Bailu, Hanlu, beginning of winter, Daxue and Xiaohan are silver moon, Uzuki, Chen Yue, Mitsuki, Wuyue, Yue Wei, Shenyue, Youyue, Manyue, Haiyue, Ziyue and Ugly Moon.

Extended data:

"Twenty-four solar terms" and "Twelfth Construction" are the basic contents of the cadre calendar, and the Twelfth Construction is a solar month based on the twenty-four solar terms. Taking the direction pointed by the Big Dipper bucket handle as the standard for determining the month is called sword fighting.

Bucket handle rotates clockwise once, which is called "one year old". Every year at the age of 18, bucket handle rotates, pointing to the twelve days in turn, which is called "December Construction".

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.