Who are the people who study the 24 solar terms? Where are they from?

Twenty-four solar terms originated in the Yellow River Basin, and were defined as four solar terms: midsummer, midsummer, midsummer and midsummer as early as the Spring and Autumn Period. After continuous improvement and perfection, by the Qin and Han Dynasties, the 24 solar terms had been completely established. Taichu calendar, written by Deng in BC 104, officially listed the 24 solar terms in the calendar. The astronomical position of the twenty-four solar terms is clarified. Twenty-four solar terms, called Ganzhi Calendar, guide the cultivation and health preservation of China people. It is the crystallization of the wisdom of our ancestors. To sum up, no one has verified the 24 solar terms.