The first level in the twenty-four solar terms

Generally can be divided into four categories. The first category reflects the seasons, and the "four seasons and eight festivals" we just talked about belong to this category. The second category reflects the temperature change, and there are five solar terms: slight summer heat, great summer heat, summer heat, slight cold and severe cold. The third category reflects weather phenomena, including rain, Grain Rain, white dew, cold dew, first frost, light snow and heavy snow. The fourth category reflects phenological phenomena, including four solar terms: startled sting, Qingming, Xiaoman and Mangzhong.