Generally, the solar calendar can only warm up around March. In beginning of spring, it usually lasts for 3-5 days in February, and the solar term is awakened in March, ending the cold breath. Generally speaking, it will be cold for a while after the beginning of spring, because it is cold in late spring, which usually takes several nine days. In early spring, northern China is still in winter, with heavy snow and freezing. Only when the temperature reaches 10 degrees for five consecutive days can we consider real climate warming.

Beginning of spring is the first of the 24 solar terms. Standing means "start"; Spring represents warmth and growth. Twenty-four solar terms were originally formulated on the basis of "variable stars". When the bucket handle of the Big Dipper points to the shade, it is beginning of spring. At present, solar terms are determined according to the longitude of the sun. When the sun reaches longitude 3 15, it will be the beginning of spring, and the festival will be held from February 3 to 5 of the Gregorian calendar every year.