Chang Xia said that saying goodbye to spring is the beginning of summer. Spring comes and summer grows, autumn harvests and winter storage, and in the long summer, everything is thriving. Because China has a vast territory and a large span from north to south, natural rhythms vary from place to place. The following is the origin and matters needing attention of the long summer solar terms I compiled for you, hoping to help you.

The origin of long summer

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.

In the long summer, everything is thriving. The book "Eight Chapters of Lotus Life" written by the Ming Dynasty said: "On the day of summer dream, heaven and earth began to merge and everything was beautiful." At this time, the summer harvest crops entered the late growth stage, the winter wheat blossomed and filled, the rape was close to maturity, and the summer harvest crops were basically a foregone conclusion that year. Therefore, there is a saying in agricultural proverbs that "see summer in the long summer". According to records, during the Zhou Dynasty, on the day of long summer, the emperor personally led hundreds of civil and military officials to the suburbs to "welcome summer" and instructed Si Tuleideng and other officials to encourage farmers to work hard. Old customs make summer a traditional folk festival, called "Long Summer Festival".

The Han dynasty also followed this custom. The Book of Sacrifice in the Later Han Dynasty reads: "On the day of long summer, we welcome summer, and all the southern suburbs worship Chi Di, and the car flags and costumes are all red." The song "Zhu Ming" and the dance "Dancing with Wings". In the Song Dynasty, etiquette became more complicated. It was not until the Ming Dynasty that there was a "taste of new customs". In the Qing Dynasty, "Ji Sheng at the age of Emperor Jingdi" contained that "spring buds of rice noodles that are usually exposed outside are taken in long summer, fried into various fruit stacks with sugar noodles, and fed to each other". Willow branches are folded into fruits, which are children's food. In Jiangsu and Zhejiang, there is also the custom of eating flowers and rice in the long summer, and some people call it "food supplement". There is also the folk custom that "eggs are eaten in the long summer and stones are crushed". It is said that eating eggs and duck eggs in long summer can enhance physical fitness and resist summer heat. Some people eat bamboo shoots in the long summer and some people drink them in the long summer, which is called "seeing three novelty in the long summer". In the southern region, in the old society, every family steamed new tea and gave it to relatives and neighbors with various fruits.

Matters needing attention in long summer diet

1, avoid overeating and catching cold.

In hot summer, people especially like to eat cold food, but they often ignore the hygiene of cold drinks and cold food, which is easy to cause gastrointestinal diseases. Old people and children should pay special attention to the reasonable collocation of meals. Eat some digestible cold food. Eating vegetables raw in summer is a good recipe for many people, but you can't eat more just for a short time, otherwise it will easily lead to indigestion and gastrointestinal dysfunction (such as bloating and diarrhea).

It's really tempting to eat vegetables raw in hot summer. When cooking, you can soak it in boiling water and eat it cold (such as celery, spinach, white tofu, etc. ). When cooking cold dishes, you can add some seasonings such as vinegar, ginger and salt. Vinegar can detoxify and digest food, and ginger can dispel cold and digest food. Do cold food, avoid lard, tea seed oil, rapeseed oil and sesame oil. Food in summer goes bad easily. Vegetables must be washed clean, and the yellow ones with insect spots should be removed. Pay special attention to food hygiene in summer.

2, avoid being too full

If you can overeat, you can't be full, especially when you eat. The proverb says, "Eat less and live to ninety-nine." Huangdi Neijing? Su Wen pointed out that "the diet should be moderate" and "not excessive". The digestion of old people and children is not strong, especially in summer. If they eat too much and can't digest it, it is easy to damage the spleen and stomach and lead to stomach problems. If you are 80% full, your appetite will continue to increase.

3. Avoid "fruitful"

A large number of seasonal fruits are on the market in midsummer. Coupled with the hot weather and loss of appetite, many people like to eat more fruits to supplement their nutrition. Many women who love beauty firmly believe that "three meals of fruit a day, self-cultivation, beauty and beauty", or simply use fruit instead of diet. However, this practice is not desirable, and special attention should be paid to dietary nutrition supplementation in midsummer.

Although eating fruit can absorb a lot of vitamins and water, we can't ignore the balanced intake of other nutrients. So eat fruit in moderation. The basic nutrients needed by human body are carbohydrates, minerals, protein and amino acids. But eating fruit alone can't meet the needs of these nutrients. If the diet is "fruity" for a long time, it will have adverse effects on the endocrine system, digestive system and immune system of the human body, and it will also cause nutritional imbalance.

Disinfection and cleaning are very important before eating fruit. However, some pesticides or bacteria often remain in the epidermis of grapes, strawberries, bayberry and so on. If you don't clean or eat poisonous fruit by mistake, you will have symptoms such as headache, dizziness, nausea and vomiting, and even severe cases will be accompanied by symptoms such as salivation and diarrhea. When eating fruit, cleaning is very important. You can soak it in clear water for one hour (it is not advisable to wash the fruit with detergent or disinfectant).

Physical exertion is particularly high in summer. For some special groups, we should pay more attention when eating fruits. Pregnant women should avoid eating "cold fruits" (such as frozen watermelons) when choosing fruits, otherwise it will stimulate the stomach, lead to diarrhea and easily lead to premature delivery. There is a folk saying that "one litchi has three fires". Litchi is a warm food, and it is easy to get angry when eaten too much, which will lead to constipation, toothache, facial scabies, oral ulcers and other diseases. Therefore, when choosing fruits, you should eat them according to your own situation.

After the long summer, how do pregnant women keep in good health?

1, moderate exercise to avoid heatstroke

Pregnant women can't walk in the hot sun in summer, mainly to avoid heatstroke. In addition to driving, usually try to walk, but travel at the right temperature, not too far and too tired. Walking can be said to be a better activity for pregnant women, which can avoid the unfavorable situation during childbirth.

2. Maintain a good indoor environment during pregnancy.

The environment in which pregnant women live is more important. In the long summer and the hot weather, pregnant women need to pay attention to the indoor temperature. The suitable indoor temperature is mainly 17℃-23℃, and the humidity should be kept between 40% and 60%. It is also necessary to put an indoor air purifier, and the purification and disinfection of indoor air is also needed.

3. Choose comfortable bedding during pregnancy.

Sleep is very important for pregnant women. For mattresses that are too soft, they are not suitable for pregnant women. At this time, you can choose a brown mattress or a hard bed, and then lay a cotton pad with a thickness of 9 cm on it. I am also very particular about pillows, keeping them soft and suitable. There are many bedclothes for pregnant women on the market now, so you can consult a doctor.

4, cool and spacious is conducive to perspiration.

Summer is the favorite season for young women, because they can wear all kinds of clothes to show off their beautiful bodies. Because expectant mothers have more metabolism than others, they must choose clothes that are conducive to perspiration. This is cooler and easy to be absorbed by clothes after sweating; Second, poor perspiration can easily cause rashes and skin infections.

It is recommended to wear loose, cotton clothes and try to be cool and spacious. Bras and belts should not be tied too tightly, so as not to cause mammary gland hyperplasia and affect fetal development. Close-fitting clothes and trousers are also made of silk or cotton, which are light, soft and comfortable, easy to wet and absorb, and emit body temperature.

This diet is healthy and nutritious.

The hot weather in summer, with more chances of bacterial infection, is the season of high incidence of gastrointestinal diseases, which is closely related to food hygiene. Therefore, pregnant women should pay special attention to food hygiene, and should not eat cold food overnight, not to eat too many cold drinks, and eat less seafood and kebabs barbecued on the street. When using the refrigerator, raw food should be separated from cooked food. Expectant mothers should reheat food before eating, and can't eat frozen food directly in the refrigerator.