I, eat eggs in the summer, called "summer", so that people in the summer will not lose weight, not to lose weight, energy, strong work. Old Chinese medicine said salted duck eggs in the summer ate people have strength, which coincides with the nutritionist's statement, the nutritionist said the duck eggs in calcium, iron and other inorganic salts are rich in calcium, iron content than eggs, fresh duck eggs are high, is the first choice for summer supplemental calcium, iron.

Second, 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 limb weakness, loss of appetite and gradually lose weight, called "Resistance to summer". 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.

Three, the ancients believe that the egg round and smooth, symbolizing the success of life, eat eggs on the day of summer to pray for the peace of summer, the test of "Resistance to summer". Summer 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.