1, Qingming is one of the twenty-four solar terms and the fifth solar term in spring. The bucket refers to B, when the sun reaches the longitude of the Yellow River15, it is Qingming. During the Qingming period, the atmosphere was clear and everything was obvious, hence the name. Qingming is a solar term that reflects the phenological changes in nature. At this time, the sun is shining, the plants are sprouting and the flowers are in full bloom, and nature presents a vibrant scene. At this time, the southern part of our country has shown the image of clear air and bright scenery; Snow began to break in the north, the temperature rose, and the spring was warm.

2. Qingming Festival is both a solar term and a festival. Tomb-Sweeping Day Qi provides important conditions for the formation of Tomb-Sweeping Day customs in terms of time and weather phenology. Tomb-Sweeping Day Qi, which is related to phenology at the age of 20, is often used to guide farming, which means that the weather is clear and the spring ploughing is timely. Tomb-Sweeping Day Day is a day when people pay homage to their ancestors and pursue the future cautiously. Because of the integration of the two, Qingming has both natural and humanistic connotations. The main customs of Qingming are: sweeping graves, hiking, swinging, flying kites, planting trees and inserting willows.