How to understand the 24 solar terms?

Beginning of spring, rain, fright, vernal equinox, Qingming, Grain Rain;

Long summer, Xiaoman, Mangzhong, Summer Solstice, Xiaoshu, Dashu;

Beginning of autumn, Chu Shu, Bailu, Autumnal Equinox, Cold Dew, First Frost;

Beginning of winter, light snow, heavy snow. Winter solstice, slight cold, severe cold

Memory method: Spring rain shakes the valley in spring, summer is full and summer is continuous, autumn dew is frosty, and winter snow drifts.

"Rain" and "thorn" are inserted into the bisector between beginning of spring and the vernal equinox. These two names describe the meteorological or biological characteristics of the first half of spring. It's going to rain, and the little life hiding in the ground for the winter will start to wake up when it hears the call of the sun. Between the vernal equinox and the long summer is "Qingming" and "Grain Rain". From the rainy season, we can know the climate of Tomb-Sweeping Day. Literally, we can know from Grain Rain that this is the season when crops need rain to promote their growth. Insert "Xiao Man" and "Busy" between the long summer and the summer solstice. When wheat is irrigated in Xiaoman, awn seeds are the busy season for wheat harvest and autumn planting. Between summer solstice and early autumn, there are "slight summer heat" and "great summer heat", which are the hottest months. Between beginning of autumn and the autumnal equinox, the words "summer heat" and "white dew" are inserted, which is the end of summer heat and the early autumn season when dew begins to appear in the morning and evening. The significance of inserting "cold dew" and "first frost" between the autumnal equinox and beginning of winter is self-evident. Insert "light snow" and "heavy snow" between beginning of winter and winter solstice; The meteorological significance of inserting "slight cold" and "severe cold" between winter solstice and beginning of spring is more clear and needs no explanation. In a word, these sixteen solar terms are inserted between the eight solar terms to describe the meteorology and phenology of the Yellow River Basin in China.