Why does Chang Xia eat eggs and zongzi?

There is an ancient folk custom: eating eggs and zongzi on the day of long summer is said to prevent heatstroke. There is a saying: "If you eat eggs in the long summer, it will not be summer on a hot day." It means that you can eat eggs to escape the heat in the long summer. Zongzi is eaten in most places during the Dragon Boat Festival, but in some places in Jiangsu and Zhejiang, it is eaten in the long summer. Because zongzi here is wrapped in reed leaves, reed leaves are fresh and tender in the long summer solar terms. By the Dragon Boat Festival, it will be old, and small flying insects are stuck on its leaves, which is difficult to remove.

Long summer is the seventh of the 24 solar terms and the first in summer. Long summer indicates the change of seasons and the official start of midsummer season. When the sun reaches 45 degrees of the yellow meridian, it is a long summer, usually on May 5 or 6 of the Gregorian calendar every year. After the long summer, the temperature in southern China rose rapidly, and the rainfall and days of rainfall increased significantly.

"Summer" in long summer means "big", which means that plants sown in spring have grown upright. When the temperature rises obviously, the summer heat comes, thunderstorms increase and crops enter the peak season, people are used to taking long summer as an important solar term. There are three times in the long summer, the first time is the sound of insects, the second time is the appearance of earthworms, and the third time is the birth of melons. The main customs are welcoming the summer ceremony, tasting new things, playing egg games, and "weighing people" in the long summer.