The origin of Tomb-Sweeping Day and the legendary oral communication.

Tomb-Sweeping Day is not only one of the 24 solar terms, but also a traditional festival with a long history. The day before in Tomb-Sweeping Day was called Cold Food Festival. The two festivals coincide with the spring of March, with bright spring and pink and green. The establishment of the Cold Food Festival is to commemorate the intermediary of the Jin Dynasty in the Spring and Autumn Period that "it is unfair to burn people to death".

During the Qingming cold food period, there were folk customs such as forbidding fire and cold food, worshipping ancestors and sweeping graves, and going out for an outing. There are also traditional activities such as swinging, flying kites, tug-of-war, cockfighting, willow crossing, weeding and ball games. ?

Qingming is one of the 24 solar terms. According to the solar calendar, it is not a festival in itself. Qingming coincides with Shangsi Festival and Cold Food Festival in ancient spring at the beginning of March of the lunar calendar. As time goes by, Qingming has become a part of the Spring Festival.

As for the custom of ancestor worship in Tomb-Sweeping Day, there is a saying that it is related to the Cold Food Festival in March of the lunar calendar. The legend of the Cold Food Festival was founded by Jin Wengong to commemorate the minister of the Spring and Autumn Period. Zhu believes that this is actually a saying that future generations will attach themselves to it, just like the Dragon Boat Festival and Qu Yuan.

The origin of the Cold Food Festival is related to the difficulty in getting fire in ancient times. Once the fire is obtained, it will be preserved for a long time. Today, some ethnic minority areas still keep the custom of setting fire pits in their houses. The Cold Food Festival is an annual "fire change" day. At that time, people had to change new kindling, so they had to eat cold food. Therefore, the Cold Food Festival itself has nothing to do with offering sacrifices to sweep graves.