The custom of "eating eggs in summer" has a long history. As the saying goes: "Eat eggs in the summer, hot days are not resistance to summer." According to legend, from the day of summer, the weather is warm and sunny and gradually hot, many people, especially children, will have the feeling of physical fatigue and weakness of the limbs, loss of appetite and gradually lose weight, called "Resistance and Propulsion". Mother Nuwa told the people, every year on the day of summer, children's chest hung on the boiled eggs of chickens, ducks and geese, can be avoided Resistance to summer. Therefore, the custom of eating eggs at the summer festival has continued until now.

Summer is generally in the fourth month of the lunar calendar, "April eggs as cheap as vegetables", people put the eggs into the leftover "seven tea" boiled and burned into the "tea eggs". Later, people improved the cooking method, in the "seven tea" in the addition of fennel, meat brine, cinnamon, ginger, from now on, tea eggs is no longer a summer festival food, and has become one of China's traditional snacks.

Why eat eggs in the summer? One theory is that the ancients believed that the egg slipped round, symbolizing the success of life, eat eggs on the day of summer can pray for summer peace. "Eat the egg in the summer, the hot days are not Resistance to summer", many places have eaten "summer egg" custom, is to say that eating eggs in the summer can prevent the common summer day loss of appetite, tiredness, limb weakness, thinning and other symptoms of bitter summer.

There is also a saying: the most complementary things to eat in the summer, eat an egg is equivalent to eating a chicken. After the summer, farming began to busy, people are easy to fatigue. Eating red dates and eggs is to replenish physical strength.

This statement, on the contrary, and Chinese medicine theory fits. According to Chinese medicine, eggs are flat, replenish qi deficiency, and have the function of tranquilizing the spirit and nourishing the heart, and eating eggs when you are sick can help restore your strength. In the past, when living conditions were not so good, jujube eggs were very difficult to eat, eat a summer egg, both hard labor before the treat, but also to the peace and the hope of a good harvest.

Because the egg does not hurt the spleen and stomach, the average person is suitable, so even people with high blood pressure and other chronic diseases, eat eggs in the summer is also good for health.

And duck eggs are cool, can nourish yin and clear the lungs, suitable for those who are weak in yin and fire, suitable for post-disease weakness, hot and dry cough, dry throat, high blood pressure, diarrhea and dysentery and other diseases. If it is a daily activity and no hypertension and other chronic diseases of young people, you can try salted duck eggs, as long as it is not eaten very salty, it can be clear heat, but also help to supplement the salt and other minerals.

In the Jiaxing area, the summer eggs also have the figure of salted duck eggs. People who engage in farming know that the ducks after the beginning of spring produce the best quality eggs, which are the best material for making salted eggs. Salted duck eggs in the summer season are pickled before the Qingming Festival, to a month after the summer just to eat, is the first spectrum of the year (Note: dialect) salted eggs. The first batch of salted duck eggs are eaten in the Lixia, which has a different meaning from the salted duck eggs of the Dragon Boat Festival.