Young people leave home, old people return, and the local accent has not changed. Where do children come from when they meet strangers? (Homecoming Book by He Zhangzhi)

Teenagers don't know the taste of sorrow and fall in love with the floor. Fall in love with the floor and worry about adding new words. (Xin Qiji's "Ugly Slave Shuboshan Road in the Middle Wall")

The eldest son is weeding in the bean field on the east side of the stream, and the second son is busy knitting chicken cages. I like children and scoundrels best, lying on the head of the stream peeling lotus flowers. (Xin Qiji's "Qingpingle Village Residence")

In February, the grass grows and the warblers fly, and the willow branches are drunk. The children came back from school early, so they were busy flying kites in the east wind. (High-definition country house)

When I was a child, I didn't know the moon, so I called it a white jade plate. (Li Bai's "Gulangyuexing")

Whoever doesn't tie the boat outside the fence, the spring breeze will blow into the fishing bay. I suspected a villager and was anxious to go to Chai Men, so I shut him down (Cui Daorong's Xi in Yi Shi).

A child with unkempt hair and immature face is learning to fish by the river. He is sitting sideways in the grass, and his shadow is set off by weeds. Passers-by waved at a distance, fearing that the fish would start (Hu Lingneng's "Children Fishing")

Music:

What is noise? What is music?

When vocal cords, strings, boards, motors and other objects vibrate, they will emit sound waves, which will spread to our ears through the air and make us hear the sound. There are two kinds of sounds: noise and music: irregular vibration sounds, such as the sound of boards and motors, are called noise; The vibration is regular, such as the singing of human vocal cords and the piano sound made by strings. , which is the so-called music. The tones used in music are mainly musical sounds.

3. What is pitch?

Music sounds high and low, which is called pitch. Pitch is determined by the vibration frequency of the pronunciation object. High frequency makes the sound high and low frequency makes the sound low. For example, when a woman sings, the frequency of vocal cord vibration is high, while when a man sings, the frequency of vocal cord vibration is low, so the male voice is lower than the female voice.

4. What is the range of tones used in music?

The range of tones used in music is about 97, ranging from the lowest pitch of 16 to the highest pitch of 4 186 per second. The largest piano in modern times can play 88 of them, and it is the instrument with the largest range. Due to physical limitations, the music that people can sing is only a small part of the music range.

5. What is a phonetic name? What do you mean by roll call?

Musical notes with different pitches are represented by C D E F G A G, and these seven Latin letters are the names of musical notes. They are generally sung in turn as DO RE MI FA SOL Ras, that is, 1 2 3 4 5 6 7 in the notation, which is equivalent to the pronunciation of the Chinese character "Domilai Fa Suo Xi". DO, RE, MI ... is the pronunciation of music when singing, so it is called roll call.

6. What is a sound train? How are syllables grouped?

Arrange more than 90 different musical sounds mentioned above to form a sequence, which is called a musical sequence. There are only seven names, but the number of sounds in the series is far more than this. How to distinguish sounds with the same name but different pitches? The method is grouping. People divide the sounds in a series into several groups. The sound group in the central position in the phonetic sequence (that is, the seven sounds starting from the central C in keyboard instruments such as piano and electronic organ) is called the minor group, and the sounds twice, twice and thrice higher than the minor group are called the minor group, minor group, minor group and minor group respectively. Of course, there are also voices lower than the small group, which are divided into the following categories: two times lower than the small group, two times lower than the large group, three times lower than the large group and four times lower than the large group. In this way, the grouping order from low to high in the sound sequence is:

Big characters, two groups of big characters, one group of big characters, one group of small characters, two groups of small characters, three groups of small characters and four groups.

The range of musical tones. The musical term is called register. The vocal range is probably: female voices range from F in small groups to A in small groups, and male voices range from F in large groups to A in small groups. So, how wide is your scope? Try it on the piano sometime. This range is your range from the lowest pitch you can sing to the highest pitch.

7. Which sound is the standard sound?

Internationally, it is stipulated that the A sound of small groups vibrates 440 times per second, which is the standard sound. Because there is a certain quantitative relationship between the tones of a tone sequence, for example, a tone twice as high as a certain pitch (also called octave high) must have a frequency twice as high as a certain pitch, and a tone twice as low as it (also called octave low) must have a frequency twice as low as a certain tone, so the pitch of a standard tone is specified, which is equivalent to the pitch of other tones. With this standard, people have the basis of tuning when making musical instruments, playing music and singing.

8. What is the overall tone? What is semitone?

Divide the distance of the group C D E F G A B into twelve equal parts, and each equal part is called a semitone. If the distance between two tones is two semitones, it is called "full tone" on keyboard instruments such as piano and electronic organ, and C-D, D-E, F-G, G-A and A-B are separated by a black keys, the distance between them is full tone; E-F, B-C, there is no black keys in the middle, and the distance is semitone.

9. What is natural sound? What do you mean by tone change?

Generally speaking, when we sing, those sounds that are sung as 1 2 3 4 5 6 7 are called natural sounds; Tone sandhi is defined as adding # in the upper left corner (such as #4, # 1) or # b (such as b7 and b3). # is called rising tone, which means that the sound is raised by one and a half tones on the original basis; B is called flat semitone, which means to lower the semitone on the original basis.

What is scale?

Centered on one of C, D, E, F, G, A and B, they are arranged from low to high (or from high to low). The order of this sound is called a scale because it goes up or down step by step like a ladder. The following two sequences are scales, the former is a major scale and the latter is a natural minor scale:

c d e f g a b c a b c d e f g a

1 1. What is notation?

A piece of music generally contains elements such as height, length and dynamics. The method of recording these elements on paper with various marks and symbols is called notation. No matter at home or abroad, many symbols have been used and are being used. Take China as an example, there are many kinds of notation at all times and in all countries. It is said that as early as the Warring States period, Shi Juan, a musician in Wei Linggong, recorded music by notation. According to written records, Gongchi spectrum and subtraction spectrum appeared in Sui and Tang Dynasties, and folk character spectrum appeared in Song Dynasty. After several changes, Miyachi notation is still used by folk artists. However, in modern times and modern times, notation and staff are widely used in China, especially notation is used by most people. From a global perspective, the staff is the most widely used.

12, what is the notation?

Notation is a notation for recording pitch with Arabic numerals 1, 2, 3, 4, 5, 6 and 7, which is known to almost all people who have read books in China. This notation was put forward by French monk Suetti in 1665. Later, Rousseau, a famous French philosopher and writer, improved it and actively promoted it. This notation is hardly popular in Europe because it is not convenient to record multi-voice and complex music. About 1882, Mei Sen, an American, introduced it to Japan while giving a lecture. It was used in Japanese schools in the19th century, but they stopped using it later. In the late Qing Dynasty, notation was introduced to China by students studying in Japan. 1904, the book School Singing written by Mr. Shen Xingong was published, which was all the rage. Since then, notation has been popularized in China. The author thinks that notation, as a popular recording method, has played and is still playing a huge role in the popularization and promotion of China music. However, because its notation has many limitations, and most countries in the world don't use it now, we should create conditions to popularize the staff in order to improve the music level and communicate with other countries in the world.

What is a staff?

The staff is the most widely used symbol in the world. In the current notation, the staff is the most rigorous, accurate and scientific. It uses five parallel horizontal lines to record the sound level, and a hollow (or solid) ellipse or a figure with a vertical line on its side (some even add a "tail" at one end of the vertical line as a comment to indicate the length of the sound (for example, please see the music score published by this station) has a three-dimensional effect, which is convenient for recording multi-voice music. /kloc-was officially introduced to China at the end of 0/7, and it was introduced in detail in "Continuing the Law and Justice of Lu" compiled by the court during the Kangxi period of Qing Dynasty, which shows that it has been introduced to China for a long time. From 65438 to 0930, the musician Mr. Liu Tianhua recorded the operas sung by Mei Lanfang with the staff, and published Mei Lanfang's Songs, which is the first album in China to record traditional Chinese opera music.

Some people think that staff is more difficult to learn than simple staff. This idea is easy to understand. In fact, the main reason is not that the staff is difficult, but that it is difficult to change the habit of reading music since childhood. All the music you have been exposed to since childhood is notation, and you are used to notation. It's certainly hard to change them now. If you use the staff from kindergarten, so do the music textbooks for primary and secondary schools. The music you usually see is all five elements, and you will get used to it after a long time. At present, many children begin to learn the piano at the age of three or four (you need to use the staff to learn the piano). From shallow to deep, from simple to complex, reading staff and practicing piano go hand in hand. Therefore, although many children are young, their ability to read staff is much stronger than that of many adults. What's the point? Practice makes perfect!

Literature:

Romance of the Three Kingdoms

Romance of the Three Kingdoms was very popular in ancient China. Song and Yuan dynasties came to the stage, and Jin and Yuan dynasties performed more than 30 kinds of Three Kingdoms operas. From Yuan Dynasty to Zhinian, the Pinghua of the Three Kingdoms published by Yu's family in Xin 'an came out. At the end of Yuan Dynasty and the beginning of Ming Dynasty, Luo Guanzhong synthesized folklore, drama and scripts, combined with historical materials such as the History of the Three Kingdoms by Chen Shou and Pei Songzhi's notes, and based on his personal understanding of social life, he created the well-known Romance of the Three Kingdoms. The earliest existing edition was published in Jiajing period of Ming Dynasty, commonly known as "Jiajing Edition", with a total of 24 volumes. During the Kangxi period of the Qing Dynasty, Mao Zonggang, the father and son of Maureen, collated historical events, added or deleted words, and revised them into "Romance of the Three Kingdoms" 120, which has been passed down to this day.

1330- 1400, Luo Guanzhong was a popular novelist in Ming dynasty. His native place is Taiyuan, Shanxi Province, and Qiantang, Hangzhou, Zhejiang Province, which is uncertain. According to legend, Luo Guanzhong was a screen guest of Zhang Shicheng, a peasant uprising army at the end of Yuan Dynasty. In addition to the popular Romance of the Three Kingdoms, he also wrote popular novels such as Romance of Sui and Tang Dynasties and plays such as Meet the Dragon and Tiger of Zhao Taizu.

Romance of the Three Kingdoms describes the history of nearly a hundred years from the end of the Eastern Han Dynasty to the beginning of the Western Jin Dynasty. The book reflects the political and military struggle, the infiltration and transformation of various social contradictions in the Three Kingdoms period, summarizes the historical changes of this era and shapes a group of heroes. In grasping the history of the Three Kingdoms, the author shows an obvious tendency to support Liu and oppose Cao, focusing on Liu Bei, praising Liu Bei as much as possible and exposing Cao Cao. Today, we should dialectically understand the author's tendency to support Liu and oppose Cao. Respecting Liu and opposing Cao is the main tendency of folklore in Luo Guanzhong era, which implies people's hope for the rejuvenation of the Han nationality.

The Romance of the Three Kingdoms has created nearly 200 characters, among which Zhuge Liang, Cao Cao, Guan Yu, Liu Bei and others are the most successful. Zhuge Liang is the incarnation of the "saint" in the author's mind. He has the lofty spirit of "devoting all his efforts to death" and the ambition of helping people rebuild a peaceful and prosperous world in modern times. In addition, the author endowed him with the peculiar ability of giving orders and calculating skillfully. Cao Cao is a treacherous man, and his life creed is "I would rather teach the whole world to betray me than to teach the whole world to betray me". He is a political careerist and schemer, so don't confuse him with the real Cao Cao in history. Guan Yu is "brave and resolute" and "righteous as a mountain". But his loyalty is based on personal grudges, not the national justice. Liu Bei was portrayed by the author as a model of benevolence and righteousness, a corporal who valued virtue, and a man who knew people well and did his duty well.

A Dream in Red Mansions

A Dream of Red Mansions is the peak of China's ancient novels. The book 120 chapters, the first 80 chapters were written by Cao Xueqin, and the last 40 chapters were reportedly written by Gao E.

Xueqin 17 15? A 1763？ The real name is Zhan, the word, the number Xueqin, and the number layman. Great novelist in Qing dynasty. My ancestral home is rich in Hebei and Liaoyang, Liaoning. After the Qing people entered the customs, they entered the Zhengbaiqi internal affairs office. From his great-grandfather to his father, his family inherited Jiangning weaving. When I was young, my family was rich and powerful. Later, his father was convicted, his inheritance was confiscated, and his family wealth declined. Cao Shijia moved from the south to the north. After middle age, they lived in the northwest suburb of Beijing. Their family is very poor and lives a "family porridge" life. Cao Xueqin is versatile, good at poetry and painting, talkative and arrogant. A Dream of Red Mansions has been written for 80 times. Due to poverty and illness, and the death of my beloved son, it has become an unfinished work.

A Dream of Red Mansions, also known as Stone Story and Jinyuyuan, takes the love story of Jia Baoyu and Lin Daiyu as the main line and describes a series of love stories of young men and women inside and outside the Grand View Garden. At the same time, by describing the social environment of these love tragedies, it involves politics, law, patriarchal clan system, women, morality, marriage and other issues. In feudal society, expose the world at the end of feudal society, expose the decay and evil of feudal nobles and their rule, praise the rebels who pursue light, and declare that this society is bound to perish through the tragic fate of rebels. It can be said that A Dream of Red Mansions is an encyclopedia of social life in the late feudal society of China.

A Dream of Red Mansions has created vivid characters such as Jia Baoyu, Lin Daiyu and Xue Baochai. Baoyu has always stood outside the feudal spirit and morality. He regards his official career as an official career, the words of the entertainment circle as a tool for seeking fame and reputation, and reading sages as a fear. He has a strong gentleman pants habit and is anti-feudal. He respects women, personality and freedom, and is a typical rebel of an aristocratic family and even the feudal system. Daiyu is an elegant, aloof and sentimental aristocratic lady. She regards love as her life, but her love is ruined because the aristocratic family does not allow it. Baochai is a feudal lady who abides by the rules of women's morality. She was also a victim of feudalism.

A Dream of Red Mansions breaks through the traditional way of drawing materials and conceiving, and concentrates the society on the whole family, while the Jia family is actually the epitome of the whole society.

The skill of writing people in A Dream of Red Mansions has reached perfection. The characters described are vivid, distinctive and have multiple personalities, which breaks the characteristics of typification of novel writers in the past. The author's main methods of portraying characters are: under the broad social background, carefully portraying different characters; Pay attention to the personality of the characters, and the psychological description is concrete and concise; Put the characters in a specific artistic atmosphere to set off their inner feelings.

A Dream of Red Mansions absorbs the nutrition of China's classical literary language, refines popular language and casts it into an accurate, refined, pure, vivid and elegant language.

The plot arrangement of A Dream of Red Mansions is distinct and is an organic whole. Its structure is not only interrelated and criss-crossed, but also well-defined and orderly, just like life itself, without showing traces of artificial axes.

A Dream of Red Mansions is an ordinary trivial matter on the surface, but it can see the big from the small and reflect the essence of life, which has rich and profound social significance.

After the publication of A Dream of Red Mansions, with its profound ideological implication and exquisite artistic charm, it shocked the hearts of readers from generation to generation and had a great influence across time and space, forming a huge Dream of Red Mansions in the field of academic research. After more than 200 years of ups and downs, A Dream of Red Mansions has not declined, but has become more prosperous, which shows the artistic value of A Dream of Red Mansions.

Common sense of life:

1, a small area of skin injury, with a little toothpaste, can immediately stop bleeding and relieve pain, but also prevent infection, and the curative effect is quite good.

2. Put the washing powder and cigarette butts together in the water, and after dissolving, use it to clean the glass and screen window, and the effect is good.

3. Put the shrimps in a bowl, add a little salt and edible alkali powder, grab them by hand for a while, then soak them in clear water, and then wash them with clear water, which will make the fried shrimps transparent as crystal, refreshing and delicious.

4. There is also the unique skill of jiaozi noodles: 6 egg whites are mixed into 1 kg flour, and protein will solidify quickly after jiaozi leaves the pot, and jiaozi will collect water quickly after leaving the pot, which is not easy to stick to the pot.

5. After soaking tea in water for a few days, pouring it on the roots of plants can promote the growth of plants; Or put it in the toilet or ditch after drying, which can remove the odor and drive away mosquitoes and flies.

6, uncooked rice re-cooking method: rice is raw, you can use chopsticks to tie some holes in the rice, sprinkle a little yellow wine to simmer again, if it is only superficial, turn the surface to the middle.

7. If you have to cook vegetables, make full use of water. If you pack jiaozi, you can put a proper amount of boiled water in the meat stuffing, which will not only retain the nutrition, but also make jiaozi delicious and have soup.

8, the trick of scrambled eggs: beat the eggs into a bowl, add a little warm water and stir well, pour into the oil pan for frying, and drop a little wine in the pan when frying, so that scrambled eggs are fluffy, tender and delicious.

9. How to use the casserole 1: When the newly bought casserole is used for the first time, it is best to cook porridge, or use it to cook concentrated rice washing water to block the fine pores of the casserole to prevent water seepage.

10, skillfully use thirteen spices: use dried tangerine peel when stewing meat, which is rich in flavor; Eating beef and mutton with angelica dahurica can remove fishy smell and increase freshness; Cinnamon for homemade sausage is delicious; Bacon smoked chicken with cloves has an endless aftertaste.

1 1 and the trick of jiaozi noodles is to stir the noodles a little harder, put them in a pot and cover them tightly, and simmer for 10- 15 minutes until the gluten in the noodles absorbs water and swells, and then wrap them.

12. Coriander is an Umbelliferae plant, which is rich in essential oil, but it is very volatile and cannot stand long-term heating. It is best to add it before eating to keep its aroma.

13. Do not touch the door glass when performing high-temperature washing or clothes drying procedures to avoid burns. When taking out the dried clothes, be careful of the metal parts on the clothes to avoid scalding.

14. If the collar and cuffs are dirty, you can soak the clothes in warm water with washing powder 15-20 minutes, and then wash them normally, so that they can be washed clean.

15, the use of casserole method 2: When using casserole to make soup and stew meat, you should first add water to the casserole, and then put the casserole on the fire, first with slow fire, then with strong fire.

16, when cooking, add some starchy starch to make the soup thick, which not only makes the cooked food delicious, but also protects the vitamins because the starch contains glutathione.

17. If the rice is burnt, turn off the fire quickly, put a skin on the rice and cover the pot. After 5 minutes, the skin can absorb the burnt smell.

18, the amount of washing powder: If the clothes are not too dirty or there is too much foam when washing, the amount of washing powder should be reduced. Avoid excessive use of washing powder, which not only saves money and is environmentally friendly, but also makes the washing machine more durable.

19, when cooking jiaozi, add enough water, add 2% salt after boiling, and then add it to jiaozi after dissolving, which can increase the toughness of gluten. Jiaozi won't stick to the skin and the bottom, and jiaozi will turn white and smell delicious.

20. Many people like vegetables but don't like vegetable soup. In fact, when cooking, most vitamins have been dissolved in vegetable soup. For example, after Chinese cabbage is fried, 70% of vitamin C will be dissolved in vegetable soup.

2 1. If the white socks turn yellow, you can soak them in washing powder solution for 30 minutes before washing them.

22. How to use the casserole 3: When the casserole is placed from the top of the fire, it must be placed on a dry wooden board or straw mat, and it must not be placed on a ceramic tile or concrete floor.

23. When cooking leeks, add some vinegar after drinking, and the food will become delicious. When cooking vegetarian dishes such as bean sprouts, add some vinegar appropriately, which is delicious and nutritious, because vinegar has a protective effect on vitamins.

24, bread can eliminate grease stains on clothes: when eating, if clothes are stained with oil stains, you can gently rub with fresh white bread, and the oil stains can be eliminated.

25. Scrubbing wooden and bamboo tables and chairs with residual tea leaves can make them more bright and clean. Dry the remaining tea leaves and spread them in a damp place to remove water; After the tea leaves are dried, they can also be put into pillowcases as pillow cores, which are very soft.

26. After jiaozi is cooked, fish out jiaozi with a strainer, then rinse it with warm water and put it on a plate, so that jiaozi won't stick to each other.

27. Tips for frying fresh shrimp: Before frying fresh shrimp, you can first blanch the shrimp with boiled water soaked in cinnamon, and then fry it, so that the fried shrimp tastes more delicious.

28. Try to stir-fry vegetables to avoid long-term heat preservation and repeated heating. In addition, in order to make the stalks easy to cook, you can add a little water to stew after quick frying.

29. When cooking eggs, you can soak the eggs in cold water for a while, and then put them in hot water to cook, so that the boiled eggshells are not broken and easy to peel off.

30. When a man shaves, he can use toothpaste instead of soap. Because toothpaste does not contain free alkali, it is not only non-irritating to the skin, but also rich in foam and fragrant, making people feel cool.

3 1, the wonderful use of wind oil essence (1): Sprinkle a few drops of wind oil essence on the leaves of the electric fan, and with the continuous rotation of the leaves, the room will become fragrant and have the effect of driving away mosquitoes.

32. Before painting, put a layer of cream on your hands. After painting, apply cream to the painted skin, wipe it with a dry cloth, and then wash it with soap to remove the pigment attached to the skin.

33. Tofu generally smells of brine. Before tofu is put into the pot, if it is soaked in boiling water for more than 10 minutes, the pot smell can be removed. The tofu made in this way is not only delicious, but also delicious and sweet.

34, bread can eliminate carpet stains: if a small piece of carpet at home is dirty, you can wipe it with hot bread crumbs and then hang it in the shade. After 24 hours, the stain can be removed.

35. The watch is magnetized, which will affect the accuracy of time. The elimination method is simple. Just find an unmagnetized iron ring, put the watch in the ring and put it on slowly. After a few minutes, the watch will be degaussed and restored.

36. Tofu is cold, usually with stomach cold. If you feel chest tightness and nausea after eating tofu, don't eat it; People who are prone to diarrhea, bloating and spleen deficiency should not eat more tofu.

37. Toothpaste also has a cleaning function! When taking a bath, using toothpaste instead of bath soap to clean the body not only has obvious skin cleaning effect, but also can cool the whole body after bathing, and also has the function of preventing miliaria.

38. When cooking in a microwave oven, you should soak the raw materials with seasonings first. This is because the process of microwave cooking is very fast, and it is difficult to taste without soaking, and it is also difficult to play the role of onion, ginger and garlic in enhancing fragrance.

39. Tips for relieving eye fatigue: Soak the medicinal millet grass or chrysanthemum in water, then soak the towel and apply it to the eyes for 10 to 15 minutes, which can effectively relieve eye fatigue.

40, cooking should not use raw water. Because the tap water contains chlorine, it will destroy the vitamin B 1 contained in the grain during cooking. If you cook with boiling water, vitamin B 1 will not be lost.

4 1. Tips to prevent the chopping block from cracking: After buying a new chopping block, apply cooking oil on the upper and lower sides and around the chopping block, and then apply it three or four times after putting the oil in, so that the chopping block will be more durable.

42, the magical use of essential balm (2), add a few drops of essential balm to the water, you will feel cool after bathing, and it also has the functions of preventing prickly heat, preventing mosquito bites and removing sweat.

43. When frying steamed bread slices, first soak the steamed bread slices in cold water and then fry them in a pot, so that the fried steamed bread slices are brown and crisp, delicious and fuel-efficient.

44. When cooking or cooking soup, if it is salty, you can cut a washed potato in half and put it in the soup for a few minutes to make the soup from salty to light.

45, grape juice taking antihypertensive drugs has a good effect! Taking antihypertensive drugs with grape juice instead of boiling water can make blood pressure drop steadily, and there will be no phenomenon of blood pressure rising and falling.

46. It's hot in summer, and it's easy to get prickly heat. You can wash the area with prickly heat with warm water and apply a layer of toothpaste, and the prickly heat will soon disappear.

47. Even if indoor toilets are washed clean, they often leave an unpleasant smell. As long as you put a small cup of balsamic vinegar in the toilet, the smell will disappear. It is valid for six or seven days and can be changed once a week.

48. If old rice is used to cook rice, 1/4 or 1/5 beer can be added to the rice after rice washing, so that the steamed rice is sweet and shiny, just like new rice.

49. Soaking your hands in hot water can cure migraine. Immerse your hands in hot water, the amount of hot water is appropriate to soak your wrists, and keep heating the water to keep the water temperature. After half an hour, the pain can be relieved or even completely disappeared.

50. When cooking jiaozi, most of the water-soluble nutrients in the dumpling skin and stuffing are dissolved in the soup, and only a small part is lost due to heating. So you'd better drink the soup when you eat jiaozi.

Popular science:

Modern biomechanics originated in the late 1960s, and the development of biomechanics and sports biomechanics entered a period of formation and development. During this period, experts actively studied the biomechanical characteristics of human and animal movements. The scientific research of the following scholars is widely known: Alexander1970, author of biomechanics; 1974, Wu Ke Brodovich made a mathematical simulation of animal movement, which promoted the development of robot manufacturing technology. 1968, hillier Bohlander founded the theory that animals move with uniform gait. 1968 sukhonov established the general system of terrestrial vertebrate movement; Hatton's research on the regulation mechanism of human support exercise system: Miller's research on human exercise biomechanics. 1967 the first international symposium on biomechanics was held. 1973 The International Biomechanics Society was formally established, marking the formal establishment of biomechanics. During this period, sports training was formed as an independent discipline in the Soviet Union, but before that, it only developed within the scope of sports. The following textbooks became the first works to elaborate the knowledge system of sports training: Modern Sports Training System by Ozolin of the Soviet Union (1970), Training Science edited by harriet of Germany (197 1) and Sports Training Theory and Method by Lidovski of Poland. This has promoted the development of sports biomechanics in the new scientific direction of sports training.

With the continuous expansion of the research scope of sports training, biomechanical research from different angles in athletes' technical analysis of competition has been actively developed. At present, the main institutions that study sports biomechanics are mostly in eastern European countries, such as Poland, Russia (mainly in Moscow, St. Petersburg, Volgograd, Krasnodar, Novosibirsk and other cities) and Ukraine (Kiev National Sports University and Kharkov National Academy of Sports Sciences). The practical significance of modern sports biomechanics research is determined by the following two reasons: on the one hand, the social significance of sports is constantly improving and the number of sports events is increasing, which determines the necessity and prospect of sports biomechanics research; On the other hand, with the rapid development of science and technology, many new scientific research methods are constantly emerging, which makes it possible to comprehensively study athletes' skills in completing competitions, thus improving athletes' training and competition results.

The development of modern biomechanics obviously has several directions, namely, engineering biomechanics, medical biomechanics and educational biomechanics (Donskoi, 1997). Engineering biomechanics and medical biomechanics have been well studied in theory, with well-known and used instruments and equipment, which determines that their research is based on a relatively high level of scientific methods, but there is another situation in the research of educational biomechanics, which is mainly used to solve teaching tasks.

Educational biomechanics is a relatively new branch of biomechanics research. At present, it is still in the stage of accumulation and understanding of basic materials and is forming its own theoretical theory. At present, an important task of educational biomechanics is to create a theory based on the conceptual system to explain and predict the main development direction of the studied phenomenon.

The expansion of the research scope of biomechanics on sports and sports issues and the further development of sports and sports theories have promoted the formation of a relatively new research direction in educational biomechanics-evolutionary biomechanics. The main task of evolutionary biomechanics is to reveal the law of action evolution by studying the law of natural development of human body, which is indeed an important task, because if we can't understand the law of human motor function changing with age, it is impossible to make a training plan correctly. The scientific research results of Balisevich, Professor Sudura and Academician Yang Jintian show that: (1) during the individual development, the development of functional components and structures (used to ensure the form and functional mechanism) of human body is unbalanced; (2) The development of human movement in individual development is multi-level and rhythmic; (3) The performance of human movement in individual development is highly personalized; (4) The absolute result of the development of human motor function depends on the characteristics and intensity of physical activity.

History:

1 and 58 1 years, Emperor Wendi of Sui Dynasty (Emperor Wendi of Sui Dynasty) seized the Northern Zhou regime, established the Sui Dynasty, and made Chang 'an its capital.

In 2.589, the Sui Dynasty destroyed Chen and unified the north and south.

Since 605, Emperor Yang Di has opened a Grand Canal that runs through the north and south.

4. The Grand Canal in Sui Dynasty, with Luoyang as the center, Zhuo Jun in the north and Yuhang in the south, was more than 2,000 kilometers long and was the longest canal in the ancient world.

5. The Grand Canal in Sui Dynasty was divided into four sections: Yongji Canal, Tongji Canal, Hanjiang River, Jiangnan River, Haihe River, Yellow River, Huaihe River, Yangtze River and Qiantang River.

In 6.6 18, Emperor Yang Di was killed by the Ministry in Jiangdu, and the Sui Dynasty perished.

In 7.6 18, Li Yuan fought against Sui Dynasty in Taiyuan and entered Chang 'an to establish the Tang Dynasty.

8. The only female emperor in the history of China was Wu Zetian, who proclaimed herself emperor in her later years and changed her name to Zhou.

9. Emperor Taizong attached importance to developing production and reducing farmers' tax and labor; Pay attention to the role of talents and be open-minded to teach. He appointed Du Ruhui, who was resourceful and good at breaking great events, as Prime Minister and called him "Fang Mou Du Duan". Reuse the outspoken Wei Zhi as a famous remonstrator.

10, during the reign of Emperor Taizong, politics was relatively clear, economy developed rapidly, and national strength gradually increased. Historically, the rules at that time were called

"Zhenguan rule".

1 1. The world's first tea monograph, Tea Classic, appeared in the Tang Dynasty, and the author Lu Yu was called "Tea God" by later generations.

12, Wu Zetian was promoted, and Emperor Xuanzong of the Tang Dynasty appointed Yao Chong as prime minister.

13, the ceramic industry had an important development in the Tang Dynasty, and Yue kiln celadon, Xing kiln white porcelain and Tang tricolor were the most famous. Tri-colored Tang Dynasty is a treasure of world craft.

14 During the Tang Dynasty, the metropolises in China included Chang 'an, Luoyang, Yangzhou and Chengdu.

15, Chang 'an is divided into Fangcheng, a residential area, and the city is a bustling business district.

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