1, the time in Tomb-Sweeping Day is 15 after the vernal equinox and at the beginning of the third month of the lunar calendar.

2. The origin of Tomb-Sweeping Day is related to Tomb-Sweeping Day Qi in the 24 solar terms.

Tomb-Sweeping Day's customs include wearing willows, planting trees, swinging and flying kites.

4. Tomb-Sweeping Day's cultural implication is to express gratitude to his ancestors, cherish their memory and live in harmony with nature.

5. Tomb-Sweeping Day, also known as outing festival, outing festival, March festival and ancestor worship festival, is celebrated at the turn of mid-spring and late spring. Tomb-Sweeping Day is both a natural solar term and a traditional festival.