What customs did ancient officials attach importance to the long summer solar terms and long summer?

The old customs make summer a traditional folk festival, which is called "Long Summer Festival". In ancient times, Emperor Tiandi led hundreds of officials to welcome summer in the southern suburbs and held ceremonies to worship Emperor Yan and Zhu Rong. It was not until the Ming Dynasty that people began to taste new customs. In the Qing dynasty, there were more customs such as offering sacrifices to gods, tasting new products, giving gifts, weighing people and making new tea. Long summer eggs, healthy foot bamboo shoots, five tiger pills and three and a half "food supplements" are stored in Jiangsu and Zhejiang provinces. In Xuanwei, Yunnan, there is a gate with acacia branches and safflower to suppress sacrifices, and the walls are surrounded by ashes to avoid snakes. Some ethnic minorities also have the custom of long summer festival. It is said that people must eat eggs, seven-leaf tea, plums and wheat bean porridge in summer, which is said to have the magical effect of getting rid of diseases. Yancheng Weighing Yancheng residents attach great importance to the Long Summer Festival, and the diet on this day includes boiled eggs, boiled lotus roots, jiaozi and steamed cakes. In addition, there are two special customs: weighing and eating yellow sesame seeds cake. Eating fixed-edge paste in Fuzhou is to pack fixed-edge paste in the long summer, and it is popular to cook fixed-edge paste in Fuzhou to escape the heat. Fixed-edge paste (also called pot-edge paste) is made by boiling the pot edge with rice paste, and adding shrimp, shrimp oil, onion, golden needle, black fungus, clams, or a small amount of seafood clear soup such as mushrooms and dried clams. There is a saying in Jiangnan that "three creations" are tasted in the long summer. The "three new" are cherry, green plum and shad. "Three innovations" also refer to "bamboo shoots, cherries, plums", "cherries, plums, wheat kernels" and "bamboo shoots, cherries and broad beans". In short, in the long summer, you can eat fresh food in season. The custom of eating eggs in long summer has a long history. As the saying goes, "if you eat eggs in the long summer, it will not be summer when it is hot." According to legend, since the day of long summer, the weather has been sunny and warm, and it has gradually become hot. Many people, especially children, will feel tired, lose their appetite and gradually lose weight. This is the so-called "squat". The ancients thought that eggs were round and symbolized the perfection of life. Eating eggs in summer can pray for peace in summer and stand the test of "summer". Summer begins in April of the lunar calendar. "Eggs in April are as cheap as vegetables." People put eggs in leftover "Qijia tea" and cook them, which becomes "tea eggs". Later, people improved their cooking methods and added fennel, gravy, cinnamon and Jiang Mo to Qijia Tea. Since then, tea eggs have become one of the traditional snacks in China, replacing the seasonal and climatic foods in the long summer. "Eating an egg in the long summer is extremely powerful." People in Ningbo have the custom of eating tea eggs in the long summer.