What does the twenty-four solar terms mean?

Definition of 24 solar terms: 1: According to the position of the apparent sun on the ecliptic, it divides 24 seasons and climates that reflect the natural phenomena and seasonal characteristics of farming in a certain area of China (represented by the middle and lower reaches of the Yellow River). Definition 2: The position of the sun on the ecliptic reflects the natural phenomenon and seasonal characteristics of farming in a certain area of China (represented by the middle and lower reaches of the Yellow River). Definition 3: There are 24 seasons and climates that reflect the seasonal characteristics of natural phenomena and agricultural activities in a year, namely, beginning of spring, rain, sting, vernal equinox, Qingming, Grain Rain, Long Summer, Xiaoman, Mangzhong, Summer Solstice, Small Summer, Great Summer, beginning of autumn, Early Summer, White Dew, Autumn Equinox, Cold Dew, Early Frost, beginning of winter, Light Snow, Heavy Snow and Winter Solstice. Twenty-four solar terms, a supplementary calendar to guide farming in ancient China, were formed in the Spring and Autumn Period and the Warring States Period. Because the lunar calendar in China is a kind of "yin and yang calendar", which is based on the movement of the sun and the moon, it can't fully reflect the solar cycle. But China is an agricultural society, and agriculture needs a strict understanding of the movement of the sun, so farming is entirely based on the sun. Therefore, the "twenty-four solar terms" that reflect the solar cycle alone are added to the calendar as the standard for determining leap months. Twenty-four solar terms can reflect the changes of seasons, guide agricultural activities and affect the food, clothing, housing and transportation of thousands of families. The twenty-four solar terms are divided according to the position of the sun on the ecliptic (that is, the orbit of the earth around the sun).