In China, traditional festivals are both festivals and solar terms.

Qingming has two connotations: solar terms and festivals. Tomb-Sweeping Day Qi provided important conditions for the formation of Tomb-Sweeping Day customs in terms of time and meteorological phenology. Tomb-Sweeping Day is one of the 24 special festivals in the ancient trunk and branch calendars, indicating the change of seasons.

Tomb-Sweeping Day integrated natural solar terms with humanistic customs, which fully reflected the Chinese ancestors' thought of pursuing harmony between heaven and earth, paying attention to conforming to the right time, place and people, and following the laws of nature.

Due to the combination of the Cold Food Festival and Tomb-Sweeping Day, some places in the north still keep the habit of eating cold food in Tomb-Sweeping Day. In Shandong, Jimo eats eggs and cool cakes, while Laiyang, Zhaoyuan and Long Island eat eggs and cool sorghum rice. It is said that if not, there will be hail. Taian eats cold pancakes and rolls bitter vegetables. It is said that his eyes are bright. Jinzhong area still retains the habit of banning fire the day before Qingming.

In many places, after the sacrificial ceremony is completed, food will be sacrificed. When people in southern Shanxi crossed Tomb-Sweeping Day, they used to steam big steamed buns with white flour, with walnuts, dates and beans in the middle, coiled into dragons outside, and an egg tied in the middle of the dragon's body, named "Zifu". It is necessary to steam a big "blessing" to symbolize family reunion and happiness.

Baidu Encyclopedia-Tomb-Sweeping Day (one of the four traditional festivals in China)

Baidu Encyclopedia-Tomb-Sweeping Day Customs