Long summer is a solar term established at the end of the Warring States Period (239 BC), which indicates the change of four seasons and the beginning of summer in four seasons.
According to the standard of climatology, when the average temperature reaches 22℃ in five days, summer begins. In the middle and lower reaches of the Yellow River, the waiting temperature in the long summer season is close to the climatological standard, which is the origin of the twenty-four solar terms. From this point of view, it is practical to regard the Long Summer Festival as long summer in the 24 solar terms.
Long summer custom:
1. The ancient emperor wanted to lead the civil and military officials to the southern suburbs of Beijing to welcome the summer and hold a ceremony to welcome the summer.
The monarch and his subjects all wear red ceremonial costumes and red jade ornaments, and even horses and car flags should be red to express their desire and good wishes for a bumper harvest. In the imperial court, "open the ice in summer and give it to the civil and military ministers." Ice was stored last winter and given to officials by the emperor. In the folk, people drink cold drinks to cool off in summer. In summer, there is a custom of boiling tender broad beans in Jiangnan water town. In some places, there is also the custom of calling people in summer.
2. Long summer health, the weather is getting hotter, and the diet should be light. Give priority to foods that are easy to digest and rich in vitamins, and eat less big fish and meat and greasy and spicy foods.
After the long summer, the dietary principle is "nourishing yang in spring and summer", and nourishing yang focuses on nourishing the heart, which can not only supplement nutrition, but also strengthen the heart. Eating more vegetables, fruits and coarse grains at ordinary times can increase the supply of cellulose, vitamins B and C and prevent arteriosclerosis. In short, in the long summer season, it is necessary to nourish the heart and nature, make good preparations for summer heat, and make the functions of various organs of the body normal, so as to achieve the state of "sufficient healthy qi and no evil". Chinese medicine believes that "summer heat is easy to hurt qi" and "summer heat is easy to enter the heart". Therefore, at this time, people should pay attention to mental conditioning, strengthen the maintenance of the heart, especially the elderly should consciously carry out mental conditioning, maintain a calm and happy state, and avoid exultation and sadness to avoid sadness and injury.