In China, long summer still eats eggs on this day, which is called "summer tonic". Salted duck eggs are the best, because salted duck eggs are rich in inorganic salts such as calcium and iron, and the calcium content and iron ratio are higher than those of eggs and fresh duck eggs, so they are the first choice for supplementing calcium and iron in summer. In addition, in order to welcome the long summer, China and Jiangxi have the custom of drinking tea in the long summer, saying that if you don't drink long summer tea, you will suffer all summer. There is a custom of eating flowers in the long summer in Jiangsu and Zhejiang provinces, and some people call it "food supplement". Folklore experts said that during the long summer, various interesting folk customs in China showed people's good wishes to pray for good health, drive away evil spirits and eliminate disasters, and also added colorful colors to the festival.