Frost's Descent

One of the twenty-four solar terms is on the October 23rd or 24 of the Gregorian calendar. At this time, the first frost appeared in the the Yellow River River Basin of China. Most of the areas were busy planting three wheat and other crops.
"Yi Zhou Shu Zhou Yue": "autumn March gas: summer heat, autumn equinox, frost descending." "Guoyu Zhou language": "fire and wind, cold." The Three Kingdoms Wu Weizhao notes: "after the frost comes, the breeze comes first, so we must stop being cold." Wei Wei's "Oriental" the first chapter 15: "On solar terms, not frost, here has been under several frosts.