Fan Trivia

The fan, the earliest known as "fan", has a history of more than 3,000 years in China.

It is said that our country had a bushel fan and a bamboo fan at that time, and people did not use it to get cool at first, but it was a kind of decoration. In the Zhou Dynasty, the king and queen of the car have "fan fan", used to cover the wind and dust, called the "barrier fan"; later feudal emperors and high-ranking officials traveling in the honorary, there are large barrier fan, to show its might.

According to Jin Cui Bao's "Ancient and Modern Notes", the earliest fan was a long-handled fan made from pheasant tails in the Yin Dynasty, but it was not used to whisk coolness, but was a ceremonial ornament. It was held by the bearer to protect the emperor from the dust and the sun.

After the Han Dynasty, the bamboo fan in Hunan and the silk fan in Shandong were commonly used to get cool, and the form gradually increased, and became a work of art from daily necessities. The Xijing Miscellany book has a more detailed record of this.

It is reported that at the time of the playboy fan, mostly made of silk and other silk fabrics. It is rumored that there was a very skilled craftsman named Ding slow in Chang'an, once produced a very large "seven wheel fan", only by a person to manipulate the operation, can make the hall full of people feel cool.

It seems that this fan may be the ancestor of the ceiling fan and table fan. Legend has it that Yang Xiu used to draw fans with Cao Cao during the Three Kingdoms.

So, the fan is mainly to drive away the summer heat, but also can be used as a handicraft. People can paint and carve many kinds of birds and flowers and landscape figures on the fan, or write poems, which is quite elegant.

Wang Xizhi, a great calligrapher of the Jin Dynasty, saw an old woman selling hexagonal bamboo fans, and wrote five words on each fan, and the old woman was very unhappy. Wang Xizhi said, "But say it is the calligraphy of Wang Youjun, and ask for a hundred dollars."

The old woman took out to sell, and people really scrambled to buy. There are a lot of famous painting fan masterpieces in the history of China, such as the Ming Dynasty Zhou Zhiwei's Bamboo Bird fan, Tang Yin's Deadwood Crow fan, Shen Zhou's Autumn Woods solo fan, Qing Dynasty Yun Shouping's Chrysanthemum fan, Wang Wu's Wujian Purple Shelter fan, and so on.

Now, China's fan as a kind of handicrafts world-renowned. Guo Moruo once wrote a poem for the fan factory workers: cool world, from the hand.

The fan is more than a ghost axe, skillful work of art. It has been flying all over the world and overwhelmed by the west wind.

The fan can also show a certain psychological state of people. Su Dongpo described Zhou Yu's demeanor with the line "He is so handsome and handsome, and his fan is so elegant".

Du Mu's poem, "A small fan with a light robe and a small fan to fight the fireflies", describes the lively posture and joyful mood of the girls. The Tang Dynasty's Wang Jian's "Laughing Order" says: "Four fans, four fans, the beauty and come to cover their faces."

Describing the sadness of the beauty to cover her face with a fan. "The summer sun is burning like fire, and the rice is half withered in the field.

The farmer's heart is boiling like soup, and the prince's son shakes his fan." A fan, the unearned exploiters can be increased face, the people wood three points of the carving out.

Some literary works also use the fan as a metaphor for people, as a love object, "Peach Blossom Fan" wrote Hou Fangwei gave Li Xiangjun "a fan", "forever as a love object". Later, Li Xiangjun resisted the power of the traitor, blood stained the fan, by Yang Longyou coloring, painted into a peach blossom fan.

I hope the big brother to give points.

2. Some knowledge of the fan

The fan, the earliest called "fan", has a history of more than 3,000 years in China.

It is said that our country then had a fan and bamboo fan, people did not use it to get cool, but a kind of decoration. In the Zhou Dynasty, the king and queen of the car have "fan fan", used to cover the wind and dust, called the "barrier fan"; later feudal emperors and high-ranking officials traveling in the honorary, there are large barrier fan, to show its might.

According to Jin Cui Bao's "Ancient and Modern Notes", the earliest fan was a long-handled fan made from pheasant tails in the Yin Dynasty, but it was not used to whisk coolness, but was a ceremonial ornament. It was held by the bearer to protect the emperor from the dust and the sun.

After the Han Dynasty, the bamboo fan in Hunan and the silk fan in Shandong were commonly used to get cool, and the form gradually increased, and became a work of art from daily necessities. The Xijing Miscellany book has a more detailed record of this.

It is reported that at that time the fan, mostly made of silk and other silk fabrics. It is rumored that there was a very skilled craftsman named Ding slow in Chang'an, once made a very large "seven wheel fan", only by a person to manipulate the operation, you can make the hall full of people feel cool.

It seems that this fan may be the ancestor of the ceiling fan and table fan. Legend has it that Yang Xiu used to draw fans with Cao Cao during the Three Kingdoms.

So, the fan is mainly to drive away the summer heat, but also can be used as a handicraft. People can paint and carve many kinds of birds and flowers and landscape figures on the fan, or write poems, which is quite elegant.

Wang Xizhi, a great calligrapher of the Jin Dynasty, saw an old woman selling hexagonal bamboo fans, and wrote five words on each fan, and the old woman was very unhappy. Wang Xizhi said, "But say it is the calligraphy of Wang Youjun, and ask for a hundred dollars."

The old woman took out to sell, and people really scrambled to buy. There are a lot of famous painting fan masterpieces in the history of China, such as the Ming Dynasty Zhou Zhiwei's Bamboo Bird fan, Tang Yin's Deadwood Crow fan, Shen Zhou's Autumn Woods solo fan, Qing Dynasty Yun Shouping's Chrysanthemum fan, Wang Wu's Wujian Purple Shelter fan, and so on.

Now, China's fan as a kind of handicrafts world-renowned. Guo Moruo once wrote a poem for the fan factory workers: cool world, from the hand.

The fan is more than a ghost axe, skillful work of art. It has been flying all over the world and overwhelmed by the west wind.

The fan can also show a certain psychological state. Su Dongpo described Zhou Yu's demeanor with the line "He is so handsome and handsome, and his fan is so elegant".

Du Mu's poem, "A small fan with a light robe and a small fan to fight the fireflies", describes the lively posture and joyful mood of the girls. The Tang Dynasty's Wang Jian's "Laughing Order" says: "Four fans, four fans, the beauty and come to cover their faces."

Describing the sadness of the beauty to cover her face with a fan. "The summer sun is burning like fire, and the rice is half withered in the field.

The farmer's heart is boiling like soup, and the prince's son shakes his fan." A fan, the unearned exploiters can be increased face, the people wood three points of the carving out.

Some literary works also use the fan as a metaphor for people, as a love object, "Peach Blossom Fan" wrote Hou Fangwei gave Li Xiangjun "a fan", "forever as a love object". Later, Li Xiangjun resisted the power of the traitor, blood stained the fan, by Yang Longyou coloring, painted into a peach blossom fan.

I hope the big brother to give points.

3. I want to write some travel knowledge on a small fan, first aid is the best, sent to Jiuzhaigou,

Tourism involves first aid knowledge is too much, but the content of each fan can be different, the first simple introduction of a few: sprain, do not rub with your hands, you can take the cold water (ice) for 15 minutes with a handkerchief bandage.

Can also be used in common dandelion, horse chestnut pounded and applied externally. Bleeding trauma First, flush the wound with clean water (such as boiling water in a kettle) and then bandage it with a handkerchief.

If the bleeding is still more than can be used to stop the bleeding method of compression (compression of hemostasis method is divided into two kinds: one is the wound direct compression, whether with clean gauze or other cloth items directly pressed on the bleeding area, can effectively stop bleeding. The other is the finger pressure hemostasis method.

With the finger pressure on the bleeding artery proximal end of the neighboring bone, blocking the source of blood transport, in order to achieve the purpose of hemostasis), l hours later every 10 minutes or so to release, in order to protect the blood circulation. Venomous snake bite In the wild such as being bitten by a venomous snake, this time to quickly use a cloth strip to tie the upper part of the wound tightly, to prevent the toxin from spreading through the blood circulation, and then use a decontaminated knife in the wound to cut a cut about 1 cm long and 0.5 cm deep, and suck out the venom with the mouth.

Fainting and fainting Once it occurs, it is not advisable to move freely, and the patient can be gently patted to wake him up. In serious cases, artificial respiration and heart *** method of first aid.

If it is myocardial infarction, oral nitroglycerin tablets should be taken immediately. Fractures In case of fractures or dislocations, immobilize the injury with splints or wooden strips and apply cold compresses with ice or cool water.

If the spine is injured in a fall from a height, place the patient on a flat stretcher and immobilize, do not allow the body to sway, and then send to the hospital. Cramp Cramp occurs when the muscles are not well coordinated due to excessive movement or poor posture during hiking, or when the body loses a lot of salt due to the cold during or after hiking, resulting in sudden involuntary contraction of the muscles.

First aid is to pull the affected muscles, straighten the affected area, and gently *** the affected muscles. Hydrate and salt and rest until the affected area is comfortable.

ROCK FALL Steep slopes, cliffs, sunken areas, scree slopes, stream valleys, or freshly collapsed areas are prone to rock falls, especially on rainy days. If you are traveling through these sections, you should be alert and take a detour. If you encounter falling rocks, you should use the terrain to hide under the cliffs, behind the trees, or cover your head with your arms and backpack. If you hear or see falling rocks far away, you should pay attention to the direction of the falling rocks, and then dodge them in the opposite direction.

Labyrinth Mountaineering activities, in order to take into account the different physical strength of the members, should be arranged for the physical strength of the middle of the team members to walk in front of the weaker walk in the middle, in order to prevent the team members due to physical exhaustion and out of the team. All actions should be taken by the whole team or a small group.

Action should always pay attention to observe the surrounding scenery and terrain, features, and the footprints left by the person in front of you, learn to look at the map, compass and altimeter is one of the key elements of the prevention of getting lost, into the mountains, regardless of the climate, we need to know their own location, and to develop the habit of using a map, compass and positioning at any time every time you hike. If the climate is bad, such as dense fog, it is best to suspend activities first, in the fog to maintain the correct position, in addition to calculating the number of hills walked, the main branch prongs, streams and valleys, cliffs and special terrain, features, etc., are helpful in the location of the judgment.

In addition, the walking time and speed can be used to estimate the distance traveled in a certain period of time. The owner of Lijiang My Way My Stay Inn especially suggests that we should leave a mark along the way for the mountainous areas or dense mangrove forests and arrow bamboo forests that we have not been to before, so that we can go back to the original way if we go the wrong way.

And for some easily misidentified animal trails, hunting trails, forest roads, security lines, water trails, etc., should be recognized. When you get lost, you will often go into shock due to physical exertion, hunger and thirst, so you need to pay attention carefully and give first aid.

4. Trivia about peacocks

When it comes to peacocks, you may recall the Dai Peacock Dance: a beautiful dance, delicate movements, rather like a peacock jumping in the forest. The Dai people live in Xishuangbanna, Yunnan Province, is the home of the green peacock.

Tourists go to the zoo, always want to see the peacock open screen, otherwise feel a little spoiled. Peacock open screen is a male peacock courtship a representation, it is difficult to come across. People who don't know the true picture often mistake the peacock's tail screen for its tail feathers, which is not the case. We are all familiar with the rooster, the long feathers on the tail of the rooster are its tail feathers, and the short feathers behind its waist are called tail feathers. Almost all birds are so, but the peacock is an anomaly, tail feathers are particularly long, usually about 1 meter, forming a tail screen, the real tail feathers, but hidden under the tail screen, often overlooked. Spring and early summer, is kept in the zoo male peacocks show off the time. You see it, the tail screen high up to unfold, supported by the cocked tail feathers, shaped like a big fan. Copper-green sparse feather branches, scattered on both sides of each feather shaft, the end of each feather, there is an eye-shaped spot, eye-shaped spot by the dark purple, blue-green, copper, dark brown, light yellow and light grape red and other colors. Peacock constantly walking around, and shaking the tail screen, issued a "swish, swish" sound, colorful eye-shaped spot, in the sunlight, reflecting the dazzling light, very nice.

The peacock's habitat, mostly for the altitude of 2000 meters below the open savanna, into the growth of thickets, bamboo forests or coniferous, broad-leaved trees and trees in the open plateau area, especially like to be near the banks of the streams and rivers and forests in the open place activities, often 3-5 together. It is not good at flying, and when it encounters danger, it will use its strong legs to escape quickly and hide in the dense forest. Early in the morning and dusk is when they forage in groups; at noon when the weather is hot, hide in the jungle to rest; at night there is a fixed place to spend the night, such as not being alarmed, not easily replaced. Male peacocks to choose a large tree that can be placed on the tail screen to rest.

Peacock nest is very simple, in the dense thicket or grass, with claws on the ground planing into a concave, padded with some weeds and fallen leaves and other things. Female peacocks every 1-2 days to lay 1 egg, 5-6 per nest, eggs for light cream, brown or cream color. The eggs are incubated by the female peacock alone, and the incubation period is about 4 weeks. When the young chicks come out of the shell, they are covered with yellow-brown downy hair. In artificial rearing conditions, 6-40 eggs can be laid each year, female chicks by 20-24 months of rearing, will be able to lay eggs and reproduce, while the male young peacocks to grow a beautiful tail screen to, it takes 2 and a half years of time.

5.50 Science Trivia

Why do sunflowers always face the sun? The stems of sunflowers contain a wonderful plant growth hormone.

This growth hormone is very afraid of light. As soon as the light irradiation, it will go to the backlit side, at the same time it also *** backlit side of the cell rapid reproduction, so the backlit side of the side than the light side of the growth of the fast, so that the sunflower produced a light-focused bending.

2. Why do stars twinkle? We see stars twinkle, not because of a change in the luminosity of the stars themselves, but in relation to atmospheric obscuration. The atmosphere separates us from the stars, and when starlight passes through it, it is affected by the density and thickness of the atmosphere.

The atmosphere is not absolutely transparent; its transparency varies depending on its density. That's why when we look at the stars through it at ground level, we see how they seem to be flickering.

3. Why do people yawn? When we feel tired, the body has produced a lot of carbon dioxide. When there is too much carbon dioxide, more oxygen must be added to balance the body's needs.

Because of this residual carbon dioxide, it affects our body's functional activities, and the body then sends out a protective response, so it yawns. Yawning is a deep breathing action, it will allow us to inhale more than usual oxygen and discharge carbon dioxide, but also to do to eliminate the role of fatigue.

4. How high is the blue sky? The "blue sky" is actually the Earth's atmosphere. The atmosphere surrounds the earth's air, according to the different air density is divided into five layers, the total **** 2000-3000 kilometers thick.

But most of the air is concentrated from the ground to below 15 kilometers high, and the higher the air, the thinner it is. How thick the atmosphere is, how high the blue sky should be.

5. Why are there no stars during the day? Because during the day part of the sunlight is scattered by atmospheric gases and dust, the sky is very bright, coupled with the sun's radiation is very strong, so that we can not see the stars.6. The solar system has those celestial bodies? There are nine planets in our solar system.

They are, in order: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto. In addition, there are many asteroids, comets and meteors in our solar system, and there are 2958 asteroids that have been officially numbered.

The most famous comet is Halley's Comet.7. What is thunder for? It is a natural phenomenon that occurs when yin and yang electricity come together.

When it rains, some clouds in the sky are charged with positive electricity, and some are charged with negative electricity. When the two kinds of clouds come together, they will discharge electricity and send out very bright lightning, and at the same time release a lot of heat, so that the surrounding air is quickly heated up, expanding, and emitting a loud sound, which is the sound of thunder.8. Why do airplanes fly up to the sky? An airplane has two wings, like the wings of a bird, and it has propellers.

The wings produce lift, holding the airplane up in the air; the propellers produce the ability to push the airplane forward. As a result, the airplane is able to fly into the sky like a bird.

33, hung on the wall of the quartz clock, when the battery runs out of power and stop moving, the second hand often stops in the dial on the "9" position. This is because the second hand in the "9" position by the gravity moment of the largest obstruction.

9. Boiling water does not ring, ringing water does not open Before the water boils, due to convection, the water bubbles rise while vibrating up and down, most of the bubbles rupture under pressure within the water, its rupture sound and vibration sound and container **** Ming, so the sound is great. After the water boils, the upper and lower isothermal, bubble volume increases, under the action of buoyancy has risen to the surface of the water before rupture, so the sound is relatively small.

10. water and fire are incompatible with the burning of substances, must reach the ignition point, due to the specific heat of water, water and fire contact can be a large amount of absorbed heat, to make the temperature of the object on fire; at the same time after the vaporization of water vapor surrounded by burning objects, making it impossible for the object and the air in contact with the air, and without the air, combustion can not be carried out. 11. sit on the ground day line 80,000 miles due to the radius of the Earth is 6370 kilometers, the Earth every turn, the object on its surface " walk " the distance of about 40003.6 kilometers, about 80,000 miles.

This is a poem by ***, which also scientifically reveals the relationship between motion and stillness - motion is absolute, and stillness is always relative to the reference. 12. A small weighing weight weighs a thousand pounds According to the principle of lever balance, if the power arm is a fraction of the resistance arm, the power is a few times the resistance.

If the arm of force of the weighing weight is very large, then " one or two pounds " is entirely possible. 13. broken mirror can not be reunited When the distance between the molecules is large (greater than a few hundred Angstroms), the gravitational force between the molecules is very small, almost zero, so it is difficult to reunite the broken mirror.

14. If the direction of each force is the same, the magnitude of the combined force is equal to the sum of the size of each force. 15.

16. True gold is not afraid of fire to refine, the truth is not afraid of argument From the melting point of gold, although not the highest, but also 1068 ℃, while the general temperature of the flame for about 800 ℃, due to the temperature of the flame is less than the melting point of the gold, so the gold can not be melted. 17. long whistling, the mountains and valleys should be A person in the mountains and peaks of the long whistling, the sound of the sound through a number of reflections, can be formed by the flood of echo, and the long time, it seems that the mountains in the wild valley should be. The sound is reflected many times, can form a loud echo, long lasting, it seems that the mountain in the wild call, the valley in the echo.

18. Sit in a well and see very little As light travels in a straight line, the knowledge of geometric drawing shows that the frog's field of vision will be very small.19. Sit on pins and needles By the formula for pressure, when the pressure is certain, if the smaller the area of force, the greater the pressure.

A person sitting on such a felt will feel extremely uncomfortable.20.RuiXueLiuFengYi Since snow is a poor conductor of heat, when it covers the crops, it can prevent heat conduction and air convection very well, and therefore can play a role in insulation.

21. Cold before the frost, cold after the snow in the late fall at night, the air temperature near the ground suddenly become cold (temperature below 0 ℃ below), the water vapor in the air condensation into small ice crystals, attached to the ground to form frost, so there is a " frost cold before " feeling. Snow melting to need to absorb heat, so that the temperature of the air is reduced, so we have " snow after the cold " feeling.

22. Eggs touching stones - self-importance Eggs touching stones, although the same size of the force, but each object can withstand a certain amount of pressure, more than this limit, the object may be damaged. The pressure that the egg can withstand is small, so the egg will break.

23. Jade is not cut into pieces. Before it is ground, its surface is convex and uneven, and the light is diffusely reflected; after jade is ground, its surface is smooth, and the light is specularly reflected. 24. A fan has a cool breeze, and it is better to have it in summer than in winter .

6. The historical origin of the fan dance, species and other related knowledge

"Fan dance" is a representative dance of the Korean people, the earliest from the Korean traditional witchcraft, and later developed into a performing form of dance, has a history of more than three thousand years.

The fan dance originated from the traditional witchcraft, and later developed into a form of dance performance. In the late 15th century, an organization formed by wandering artists to sell their art for a living often performed various shows in villages in order to survive, including "acrobatics on the rope", "ground techniques", and so on, which are known as "fan dance" and "fan dance". "It is called "Hundred Operas of Song and Dance", in which fan dances are often performed. Fan dance is performed by women, expressing their inner joy by dancing the fan. The action of stretching and generous, dancing fan and fan modeling organically integrated, in the rhythm of the soothing give a person a beautiful and elegant feeling, in the rhythm of the brisk is cheerful and lively.

Development of this, find a paper on the Internet but can not see all, have time to look at the magazine. (The rhyme of the fan - the inheritance and development of fan dance)

7. Some little knowledge in life

Summer life little knowledge - summer life in the ten "best" summer climate is hot, germs reproduce and grow fast, affecting the health of many factors. The body's health is affected by many factors.

Therefore, to get through the summer safely, the following summer life in the ten "best" can help you to help. 1, the best spices - vinegar: summer heat sweat, eat more vinegar, can improve the concentration of stomach acid, help digestion and absorption, promote appetite. Promote appetite.

Vinegar also has a strong ability to inhibit bacteria, a short time to kill purulent staphylococcus and so on. Typhoid, dysentery and other intestinal infectious diseases have a preventive effect.

2, the best vegetables - bitter vegetables: summer temperatures and high humidity, often make people depressed, tired and weak, chest tightness, dizziness, loss of appetite, body wasting. At this time, eat some bitter vegetables are very beneficial.

According to Chinese medicine, the reason why people are not happy in summer is due to the heavy summer dampness, both hurt kidney qi and sleepy spleen and stomach. The bitter food can be used to balance the body's functions by replenishing the qi and fixing the kidney, strengthening the spleen and drying the role of dampness.

Modern scientific research has also proved that bitter vegetables are rich in alkaloids, amino acids, bittersweet, vitamins and minerals that have the function of eliminating summer heat, reducing fever, removing boredom, refreshing and strengthening the stomach. Bitter melon, bitter vegetables, lettuce, celery, dandelion, lotus seed, lily, etc. are good products to choose from.

3, the best soup - tomato soup: summer more tomato soup can get nutrients, but also to make up for the water, two birds with one stone, tomato soup (burned to be cooled and then drink), containing lycopene has a certain anti-prostate cancer and protect the heart's efficacy, the most suitable for men.4, the best meat --Duck: Do not think that summer is only appropriate to eat light food, and summer as well as complementary, the key is to choose the right complement.

Here to recommend to you duck, duck is not only rich in protein and other nutrients that people need in the summer, but also to prevent disease and healing. The mystery is that duck is a waterfowl, cold, from the Chinese medicine "hot cold" principle of treatment, especially suitable for the body has heat, fire people eat, such as low fever, weakness, less food, dry stools and edema, etc. Mostly seen in summer.

Duck and ham, sea cucumber **** stew, stewed duck juice is good to complement the Yin of the five organs; duck meat and glutinous rice porridge, stomach, blood, the function of the body after the disease is very beneficial; duck and kelp stew, can soften blood vessels, reduce blood pressure, can prevent and cure arteriosclerosis, hypertension, heart disease; duck and bamboo shoots stew, can cure bleeding hemorrhoids. 5, the best drinks - hot tea: summer can not do without drinks, dry stools and swelling, etc. are often seen in summer. -Hot tea: summer can not be separated from the beverage, the preferred neither a variety of cold drink products, nor beer or coffee, but the very common hot tea.

Tea is rich in potassium (the average content of potassium per 100 grams of tea, respectively, 10.7 mg of green tea, black tea 24.1 mg), both thirst and relieve fatigue. According to British experts, the test shows that the cooling capacity of hot tea greatly exceeds that of cold drinks, which is the best of the summer drinks.

6, the best nutrients - vitamin E: vitamins can make you safe summer, "the best" crown is not vitamin E. German scientists have emphasized that people will be able to get the best out of the summer. German scientists emphasize that people in the summer will encounter three major dangers, namely strong sunlight, ozone and fatigue, and vitamin E can minimize these three dangers.

Vitamin E in malt, bran bread, walnut puree, dairy products and other foods in the content of more, summer can be arranged a little more. If necessary, you can also take vitamin E pills, 15-60 mg per day is enough.

7, the best sports - swimming: the best sport in summer is swimming. Swimming not only exercise the human body hands, feet, waist, abdomen, and benefit the internal organs, such as the heart, brain, lungs, liver, etc., especially beneficial to the blood vessels, known as "vascular gymnastics".

In addition, due to the calories consumed in the water to be significantly higher than the land, so swimming can also cut excess weight, receive the effect of bodybuilding. 8, the best dress color - red: many people think that wearing white clothes in summer is the best, in fact, wear red better.

The mystery lies in the red visible light wave is the longest, can absorb a lot of ultraviolet light in the sun, to protect the skin from injury, to prevent the skin from aging and even cancer, and other clothing colors (including white) this effect is weaker. As for the fabric, when the blended T-shirt is good, the best mix ratio of 33% cotton and 67% polyester.

9, the best cool "facilities" - fan: from the fitness point of view, cool "facilities" is the best fan. Although the fan is already "old-fashioned", but its fitness effect is unmatched by any other modern cooling equipment.

Shaking the fan is a movement, can exercise the limbs (if consciously switch to the left hand shaking the fan, but also can receive the activation of the right brain, the development of the potential of the right brain, to prevent the unexpected effects of stroke). At the same time, the fan gets the most pleasant wind.

10, the best health measures - up and sleep regularly: summer sunshine hours, dawn early and dark late. Therefore, people's living and working hours, should then make some corresponding adjustments to sleep late and get up early for the best, and should be as much as possible to get up at regular intervals, sleep.

"Timing" is the requirement of the body's biological clock. If all year round can be timed, can cause "power stereotypes", so that the body has the best adaptability and predetermined, in the summer, more should be given to their own provisions of a strict time to go to bed, and never violate, even if the day of rest is no exception, the best time to go to bed in the summer is 22:00-23:00, the best time to get up is 5: 30-6:30.

The hot weather in summer can easily affect people's sleep, but once you have developed the habit of going to bed on a regular basis, it will be easier to rule out the interference of the climate on sleep, and will wake up naturally and comfortably in the morning, so that the body's biological clock does not appear to be a "wrong" phenomenon, and a variety of physiological rhythms can be run peacefully. The first thing you need to do is to get a good feeling for your body and mind.

8. Knowledge of elementary school students

Safety tips

Fire safety tips

First, the LPG stove can not be placed in the bedroom, office, balcony or warehouse, auditoriums and other public **** place to prevent leakage of gas fire.

Second, is the correct grasp of the use of the switch, to fire and other gas, do not gas and other fire, with Bi remember to turn off the valve, switch, the valve is bad to be replaced in a timely manner. Do not let children use the stove or play with the switch.

Third, is the use of liquefied petroleum gas, to be supervised, not far away, pay attention to adjust the size of the flame at any time, to prevent the soup overflow out of the flame or by the wind to blow out the flame, caused by running gas.

Fourth, the liquefied petroleum gas canister should be upright, not upside down, not to use boiling water or fire baking.

v. Is that if you find a gas leak, you should immediately take measures: open the doors and windows, fan fan, in order to ventilate the air (but can not be blown with an electric fan), and then find the leakage site.

Basic knowledge of fire fighting

(1) isolation method: this is a method of eliminating combustible materials.

(2) asphyxiation method: to prevent the flow of air into the combustion zone, reduce the amount of oxygen in the air, so that the source of the fire does not get enough oxygen and extinguished.

(3) cooling method: water or other extinguishing agent sprayed onto the burning material, the temperature of the burning material will be reduced to below the ignition point, forcing the material combustion to stop; or water and extinguishing agent sprayed onto the combustible material near the fire source to reduce the temperature of the combustible material, to avoid the expansion of the fire.

(4) suppression method.