What's the relationship between Tomb-Sweeping Day and Tomb-Sweeping Day?

Qingming is one of the 24 solar terms in the lunar calendar. It starts around April 5th every year when the sun reaches the longitude of 15; "Twenty-four solar terms": "March Festival" ... At this time, everything is clean and clear. Therefore, Tomb-Sweeping Day is always one of the three days in the solar calendar: April 4th, April 5th and April 6th.

Tomb-Sweeping Day is based on the Qingming Festival.