Will you go to the Mogao Grottoes to worship in ancient times?

April 5th in Tomb-Sweeping Day is not only a natural solar term, but also a traditional festival. As soon as Qingming arrives, the temperature rises, which is a good season for spring ploughing and sowing. Therefore, there is an agricultural proverb "Before and after Qingming, plant melons and beans". Cold food is a day when people forbid fire to sweep graves. Because the Qingming Festival and the Cold Food Festival were closer, they later merged into one. Cold food is another name of Qingming, and it has also become a custom of Qingming.