Lunar calendar's judgment on solar terms

Twenty-four solar terms are the most solar terms in the world. It is formulated directly according to the laws of the movement of the sun (actually, the revolution of the earth). Intuitively, each solar term corresponds to the height of the fixed sun. Twenty-four solar terms are based on "dichotomy". Insert an average of 20 solar terms. From the perspective of modern science, each solar term corresponds to an exact point on the earth's orbit around the sun. So when you see beginning of spring (or any other solar term) in one place, the height of the sun is exactly the same at noon every year; Sunrise and sunset are the same time. Because sunlight is the only external factor that affects the earth's climate. Accurately grasp the position of the sun, of course, "judgment and prediction seem to be very accurate"!