A little question about Tomb-Sweeping Day.

Qing Dynasty is one of the twenty-four solar terms in the agricultural calendar. From the geographical and agricultural point of view, around the Qing Dynasty, the weather was warm, the spring was bright, the vegetation sprouted, the sky was clear, the rainfall increased, and everything was happy. This is just suitable for the growth of crops in most parts of China. After the Qing Dynasty, Grain Rain had the meaning of "a hundred valleys after rain". It is precisely because of these reasons that in the long history of agriculture, Tomb-Sweeping Day was particularly valued by the people. From the perspective of folk customs, the tomb sacrifice in Qin and Han Dynasties and Ming and Qing Dynasties has become an indispensable ceremony and custom.