What are the origins and customs of Tomb-Sweeping Day?

It is said that it began with the "tomb sacrifice" ceremony of ancient emperors and generals, and later people followed suit and became a fixed custom of the Chinese nation to worship ancestors and sweep graves on this day. Originally, the Cold Food Festival and Tomb-Sweeping Day were two different festivals. In the Tang Dynasty, the day of sweeping graves was designated as the Cold Food Festival.

The name "Tomb-Sweeping Day" also comes from the Tomb-Sweeping Day atmosphere in the twenty-four solar terms of the China lunar calendar. 105 The first day after winter is Qi Tomb-Sweeping Day. Tomb-Sweeping Day gas * * * has 15 days. As it is Tomb-Sweeping Day, the time is after the vernal equinox. At this time, winter has gone, spring is full, the weather is sunny, the fields are bright and clean, and the vitality of nature is everywhere. It is an appropriate word to call this period "Qingming".