Stay indoors in summer.

There is a folk saying that "the head has fallen and the sun has set, so there is no place to hide." Despite the rainy weather for several days, it is already a summer solar term, the summer heat is still rising and the heat wave is rolling. The head of the sun spits poisonous gas like a snake letter, and it sweeps across the face, making the skin red and hot. At this time, the air conditioner on the wall and the fan on the floor are running day and night. "I don't go out in summer, and there are no guests." In the era when there were no fans and air conditioners, it was also interesting for ancient people to squat at home and enjoy the cool.

The Book of Songs says: "The second day, the ice rush, the third day, the spirit is hidden." As early as 3,000 years ago in Shang Dynasty, people stored outdoor ice cubes in cold winter months for the next summer to refrigerate food. In the Western Zhou Dynasty, there were institutions and officials in the royal family who specially managed the storage and supply of ice. In the state of Chu at that time, not only the royal family had to store a lot of natural ice, but also some dignitaries' homes.

In the Tang Dynasty, there was a "cool hall" in the palace that used natural water cooling to cool down. The temple was built by water, and mechanical transmission equipment similar to waterwheels was installed in the temple. Using the method of cold water circulation, the running water drives the fan wheel to rotate, and the fan wheel shakes to generate wind power, which transports cold air to the temple, forming the effect of "water-excited fan car, wind hunting skirt". At the same time, water pipes were installed on the four eaves of the palace to guide the water to the roof, and then the water was allowed to flow down along the eaves to form a water curtain, which circulated and stirred up chills. "Tang Yulin is heroic" records that the gazebo "lingers and thinks, but the sun is not seen, and the water in the corner flies into a curtain, and the seat is frozen." Folk dignitaries imitate its principles and build their own "Shuige", which is also a symbol of identity.

In the Song Dynasty, not only the wind wheel was used to send cold water, but people also decorated all kinds of flowers on the reservoir and around the hall, with a fragrant smell. Ordinary people have no money to dig a cool house, so they can only go to the market to buy it. As a result, selling ice in the street has become a profession to make a living, and even some businessmen use the hot weather to raise prices. The whimsy of Tang Yan tells the story of an ice merchant who is so greedy that he can swallow an elephant: "In the past, Kuai sold ice to the market to do business, and those who were bitter and hot would buy it back. I want to invite guests several times when I am about to earn money; The guest left in a rage, and suddenly his ice was scattered. " In the past, merchants in Luoyang, Henan Province sold ice in the street, and the price was several times higher than the original price. The customer stopped buying in a rage, and soon the ice melted. The businessman regretted his greed. If he can cross it, he must want to sing Andy Lau's song "Cold ice and rain hit his face, warm tears and cold rain mixed together".

In the Ming and Qing dynasties, the palace began to have manual mobile cooling equipment, that is, ice cubes were placed in the hollowed-out metal, and after being covered with ice, cold air would be emitted from the hollowed-out place to reduce the indoor temperature. Wait, these are all material aspects, as well as spiritual and customary aspects.

In order to cool off the heat, the ancients created many artifacts, such as shaking fans to cool off the heat, porcelain pillows to cool off the heat, summer mats to drive away the heat, ice guides to cool off the heat and so on. These small objects had a wonderful function of cooling off summer heat in the hands of the ancients. "Elements are natural colors, and circles are tailor-made works. Bai Juyi's poems show the beauty of a white feather fan. Fans, known as "shaking the wind" in ancient times, are also called "cool friends", which is probably the most important and common way to escape the heat in ancient times. In addition, porcelain pillows became popular in the Song Dynasty, which is a kind of bedding for heatstroke prevention. " It is difficult to have a long dusk in summer, and the screen window is at noon. Forgetting the phone is like sleeping during the day, and a pillow is the most hidden and appropriate. "Porcelain pillows are aura and compete with mountains. Sleeping in the clouds makes you feel more secure. " All these poems show that porcelain pillows are excellent bedding for enjoying the cool in summer. When it comes to bedding, there is naturally a mat. It's too hot to sleep, and sleeping on a bamboo mat is the most comfortable, so it's called a "summer mat". In the Song Dynasty, Cai Shi's "Boarding to the Summer Pavilion" said: "Paper screen tile pillow bamboo square bed, tired hands throwing books in the afternoon dream long." Lying on the mat can cool off the summer heat and let you throw your books aside and dream of a better life in the hot summer days.

Scholars are very emotional in summer. Li Bai's summer fever is wild, "lazy to shake the white feather fan, naked in the green forest." Take off the towel and hang it on the stone wall, and sprinkle the wind on the top. "If it is put in modern society, it will attract people's attention and be pointed out. Du Fu's method of cooling off summer heat is to eat cold drinks. There is a poem that says, "Mix the seeds with ice water, and the beauty snow with lotus roots. "Bai Juyi has a state of cooling off the heat. He wrote in the poem "Relieve Summer Heat": "Why do you sit in the hospital to relieve summer heat? There is nothing in front of me but the breeze under the window. The heat dissipation changed from calm to cool, and the room was empty. At this time, it is difficult to spend more time with others. "The poet sits alone in a wide court, facing the window, Xu Feng, cultivate one's morality and raise one's character, is not disturbed by fame and fortune, is not fettered by material desires, and there will be a breeze blowing in his ears. It is much more difficult for people to "calm down" in the world of mortals than to resist the heat! Xu Mian, a poet in the Southern Dynasties, is more fashionable to cool off the heat. " At this time, avoid high temperature and clear the bottle. "Yes, enjoy the cool summer night, don't drink a few cups, isn't it very comfortable? In this way, we are also very enthusiastic now, with several bottles of cold beer, several dishes of stew and several dishes of cooking, and several people sitting together, sweating on their foreheads but shouting "Shuang". In the Yuan Dynasty, people chose to spend the summer in the mountains. Cool and play with two birds with one stone, economical, environmentally friendly and low-carbon. He wrote in "Mountain Scenery": "Deep in the mountains in June, the breeze blows cold on the clothes. In distant cities, sparks are everywhere. "The hot sun is high in the city, but the mountains are cool and pleasant. This old gentleman is really cute. He just enjoys the cool in the mountains and doesn't forget to "gloat" the city people.

Modern people have various forms of summer vacation. There are tours to Ice City and holidays to Lushan Mountain. There are also rivers to play in and beaches to enjoy the cool. There are also sports on the court, sweating like a pig. Others stay at home, cook a pot of mung bean soup, soak a cup of sour plum juice, steam a few salted duck eggs and enjoy the taste in the tip of the tongue. There are high-lying porch windows, cattail leaf fans (for fear of air conditioning disease), and catnap with eyes closed. There are games, or calligraphy, or going to the theatre and enjoying music. There are also small gambling, playing mahjong and poker, and the days are sloppy and lazy. In short, it is not enough.

And I like to sit on a summer night, blowing a cool breeze, as if there is a flute not far away. "I was leaning alone in the dense bamboo, playing the piano and humming. The voice is so low that no one can hear it except my partner Mingyue. " The small fan shook gently and watched fireflies fly around, leaving a lot of thoughts. Clean up the dirt of the soul, repair the deformity of the soul, and understand the true meaning of life. In the complex world, we are indifferent to gains and losses and are too lazy to be enthusiastic. In the hot season, the straw in the field grows vigorously and is green, which blocks the heat in a green curtain. The lotus leaves in the pond are also green and attractive. Although the flowers withered and the fruits matured, the leaves were still full of enthusiasm. Vegetables such as cucumber, cowpea and loofah are blossoming and bearing fruit. Sometimes they throw green vines into the sky, take a closer look at the sun, and sometimes they hide the pregnant fruit under their skirts. The heat of summer especially likes these plants, which not only gives them plenty of sunshine, but also gives them plenty of rain. Under the protection of the great summer heat, fruits and vegetables grow tirelessly according to the seasons.

Cicada has been singing from early morning till late at night. Frogs jump from field to field. In the evening sky, the sunset falls on the water, and the red sun puts away its heat and shines with tenderness and smile. Children laugh and adults feel comfortable.

Summer solar terms, hot weather, the heart should be quiet. If you look at the noisy world, ignore the past, stick to the truth in your heart and believe in the truth of human nature, it should be that although it is still hot and cold, it is hard to invade.