Because of folklore, eating eggs in summer is called "summer tonic". The purpose is to make people not lose weight, lose weight, be energetic and work hard in summer. Eggs are rich in inorganic salts such as calcium and iron, and the calcium content and iron content are higher than those of duck eggs, so they are the first choice for supplementing calcium and iron in summer.

Besides eating eggs, there are other customs, such as long summer rice, bamboo shoots, strawberries and other foods.

Long summer rice: In some places such as Guangxi, five-color beans such as red beans, soybeans, black beans, mung beans and mung beans are mixed with white rice to make "five-color rice", which is called long summer rice.

Bamboo shoots: Every household in Sichuan and Yantan mountainous areas should eat bamboo shoots and Sophora beans. It is said that eating bamboo shoots has hard bones and is good for climbing mountains. Also eat green tea with green plums to prevent "eating summer". There is also the custom of eating tofu, saying that eating tofu is not afraid of rain or red bee stings.

Strawberry: Eating strawberries can promote the formation of human cells, maintain the normal functions of teeth, bones, blood vessels and muscles, promote wound healing, and also have detoxification effects. Ancient people ate more strawberries when they had wounds.