There are not only "revolutions" in the holy land of revolution-"Yan 'an, I am looking for you".

Yan 'an is one of the important birthplaces of the Chinese nation. As early as the Yellow Emperor, the ancestor of mankind, people formed tribes here, and then there was a city ... With the rise of the city, everything was related to people's lives.

First, Yan 'an snacks, starting from Getuo

Cities with a long history often have unique cuisine, and so does Yan 'an. This place, known as the "throat artery" and "military town", really has many snacks that are rare in other places, such as Getuo, Tan Huang, burning elbows and so on.

Getuo is hemp food or cat ear in northern Shaanxi language. It mainly uses buckwheat flour as raw material, making it into a pimple the size of a thumb nail, slightly thinner in the middle and upturned at the edge; Some are slightly thicker and larger. Cook these pimples in a bowl and pour the cooked mutton soup on them. Except mutton, anything delicious can be put in mutton soup, such as day lily, fungus, tofu, chestnuts and so on. In the cold autumn and winter season, eating such a bowl of Getuo is not only warm in the stomach, but also warm in the heart!

Second, I cultivated a paradise, not a wasteland.

Modern China is a rather chaotic period, with darkness and exploitation, as well as light and hope. China's * * * production party is a light bred in the darkness, like a shining lamp, leading people to the front of independence, freedom and beauty. Nanniwan in Yan 'an is a "paradise" they built with their own hands.

More than 70 years ago, the Japanese invaders launched a large-scale sweep of Yan 'an, the anti-Japanese base of the Eighth Route Army in the Communist Party of China (CPC), and the Kuomintang die-hards also mobilized troops to impose a strict military siege and economic blockade on the Shaanxi-Gansu-Ningxia border region. At that time, the border area was vast and sparsely populated, and the land was barren, with only 6.5438+0.4 million people. These people can hardly support themselves and tens of thousands of full-time cadres, soldiers and students. People in the border areas are even caught in an embarrassing situation of almost no clothes to wear, no oil to eat, no paper and no vegetables, no shoes and socks for soldiers, and no cover for workers in winter.

In order to get rid of this dilemma, the CPC Central Committee headed by Mao Zedong launched a large-scale production movement in Yan 'an after research: Chairman Mao set an example and personally reclaimed wasteland under the office building in Yang Jialing and planted vegetables such as peppers and tomatoes; Zhu De also carries a laundry list to collect manure and accumulate fertilizer everywhere; Zhou Enlai soon became an expert in spinning.

In this way, under the leadership of the central leadership, Nanniwan, which was selected as a reclamation site, began a vigorous production movement after an inspection around Yan 'an. With their own hands and sweat, the vast number of officers and men turned the originally barren land into "Pingchuan Daoxiang, full of fat ducks." Crops are everywhere, and cattle and sheep are everywhere. " Northern Shaanxi is good and southern China is good. Later, in order to commemorate the efforts of officers and men and celebrate the changes in Nanniwan, people also wrote a song to praise:

Northern Shaanxi is good in the south of the Yangtze River, with flowers and beautiful scenery. Learn from Nanniwan, where Jiangnan is everywhere, especially Jiangnan. Combat production, 359 brigade is a model.

Since then, this tragic and revolutionary romantic memory of reclamation has spread all over China with popular folk songs.

Third, failure can also be a hero.

On the title page of many computer books published today, there is a picture of an Englishman: broad forehead, narrow lips, deep eyes and sharp eyes, which makes people know at a glance that he is a profound scholar. Students who like reading computer-related books may know his name-Charles Babbage.

Babbage was born in the south of England on 1792, the son of a rich banker. Babbage is a genius, and he showed great talent in mathematics in his childhood. After entering Cambridge University, his knowledge of algebra even surpassed that of his teacher. So, the 24-year-old young man chose to stay in school and was hired as a professor of mathematics at the Lucassin lecture in Cambridge. At that time, few people could win this honor. Newton's teacher Barrow was the first and Newton was the second. If Babbage continues to work in the field of mathematics, he may have a future full of flowers, but this prodigy has chosen a peak that no one dares to climb-computer research.

At that time, huge data calculation always consumed huge manpower and material resources, just like the common census work today. In the United States at that time, it took seven years to do it once! Seeing such a thing, Babbage came up with the idea of developing a computer when he was just 20 years old.

1822, Babbage won the first battle, and the first difference extension, that is, the mathematical analyzer was born. Although it took ten years, Babbage was still full of confidence and wanted to make a second, more advanced machine. At first, his first machine was funded by the government, but the huge number of parts and complex structure made the second machine not "out of the oven" for a long time, losing tens of thousands of pounds.

Later, the British government stopped funding, Babbage also spent all his property and had to do some other work to earn money to raise research funds. Slowly, 50 years passed by Babbage like a river, and the second generation computing machine Babbage devoted his life to was still unfinished. This is not because Babbage's idea is ridiculous, but because he sees too far! For people at that time, the idea of such an analytical machine was at least one hundred years beyond its time! Moreover, the manufacturing technology at that time was not accurate enough to complete his vision.

187 1 year, Babbage, a pioneer who has contributed his life to the computer industry, finally closed his eyes. Although he failed in computer development in the latter half of his life, he and his partners left an extremely precious legacy to the younger generation in the computer industry, including 30 different design schemes, nearly 265,438+000 assembly drawings and 50,000 parts drawings ... and they are even more enterprising in adversity and strive for their ideals!

Fourth, you play with me.

You may have heard piano music, violin music and cello music, but have you ever heard symphony? Have you ever seen the spectacular scene where you played with me? Will the above three instruments appear in it?

The origin of symphonic music can be traced back to ancient Greece, and its name is also the general term of "harmony" and "harmony" in ancient Greek vocabulary. However, the real symphony is actually only a few hundred years old, and it finally matured in the hands of the famous musician Beethoven.

Generally speaking, the symphony orchestra is a big family composed of various musical instruments, including string group, woodwind group, brass group, percussion group and color instrument group.

The string group includes violin, viola, cello and double bass, which are basically distributed on the left and right sides of the conductor.

The woodwind group consists of piccolo, flute, oboe, English horn, clarinet, bass clarinet and bassoon, which are located directly opposite the conductor.

As for the trumpet, cornet, horn, trombone, tuba and tenor of the brass group, they are on both sides of the woodwind group.

Percussion instrument group consisting of timpani, Dajun drum, tambourine, gong, cymbal, tambourine, triangle drum and castanet. Was placed behind the conductor's left hand.

As for the colorful musical instrument group composed of piano, harp, xylophone, Zhong Qin, piano and chime, it is usually placed at the far left of the band.

If it is a special track like China folk songs, the symphony orchestra will add erhu, suona and other special national musical instruments.

You see, the symphony orchestra has so many kinds of musical instruments that it must have very rich expressive force. The sounds of various musical instruments correspond to each other and together form a wonderful piece of music!