2. There is an old saying in Hakkas: "Eating Ai before and after Tomb-Sweeping Day keeps you from getting sick all year round". Ai _ is a traditional snack for Hakka people in Tomb-Sweeping Day. According to folk custom, Tomb-Sweeping Day has good health all year round after eating an egg.

3. 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.