What are the two solar terms of Qinggu Tian?

Qinggutian refers to the solar terms of Qingming and Grain Rain.

Valley-clearing Day comes from the 24 solar terms Song Dynasty: Spring rains startle Spring Valley-clearing Day, and summer mountains are connected with summer heat. Autumn dew, autumn frost, little snow in winter and cold in winter. The first half of the year is June 2 1 day, and the second half is August 23. The two festivals remain unchanged every month, with a maximum difference of one or two days.

Tomb-Sweeping Day is a solar term that reflects the dual factors of climate and traditional festivals among the 24 solar terms. From the meteorological point of view, the climate in Tomb-Sweeping Day was cool and warm, and most parts of China entered the typical spring ploughing season. Vegetation and trees began to sprout, and farmers were busy with spring ploughing and sowing.

Grain Rain is the sixth solar term among the 24 solar terms and the last solar term in spring. Celebrate every April 19-2 1 in Gregorian calendar. Grain Rain was taken from the meaning of "Rain gives birth to a hundred valleys", and the precipitation increased obviously at this time. Seedlings and new crops in the field need the moisture of rain most. Only when the rainfall is sufficient and timely can cereal crops thrive.