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The Great Wall, also known as the Great Wall, is an ancient military defense project in China. This is a tall, solid and continuous platform to limit the action of enemy cavalry. ?

The Great Wall is not a simple isolated city wall, but a defense system with the city wall as the main body and a large number of cities, fortifications, pavilions and targets.

The history of the Great Wall can be traced back to the Western Zhou Dynasty, which resulted in the famous allusion "Prince of the bonfire play" in the capital of Jing Cheng (now Xi 'an, Shaanxi). ?

During the Spring and Autumn Period and the Warring States Period, countries competed for hegemony and defended each other. The construction of the Great Wall reached its first climax, but the length of the construction was relatively short at this time.

After the Qin Dynasty destroyed the six countries and unified the world, Qin Shihuang joined and repaired the Great Wall of the Warring States Period, which was called the Great Wall of Wan Li in history.

The Ming Dynasty was the last dynasty to build the Great Wall. Most of the Great Wall that people see today was built at this time.

The Great Wall, also known as the Great Wall of Wan Li, is an ancient military defense project in China. It is a tall, solid and continuous long wall, which is used to limit the enemy's riding. The Great Wall is not a simple isolated wall, but a defense system with the wall as the main body and a large number of cities, obstacles, pavilions and landmarks.

The history of the construction of the Great Wall can be traced back to the Western Zhou Dynasty, and the famous allusion "bonfire drama princes" happened in Haojing, the capital (now Xi 'an, Shaanxi) originated from this. During the Spring and Autumn Period and the Warring States Period, countries competed for hegemony and defended each other, and the construction of the Great Wall entered its first climax, but the construction length at this time was relatively short.

After Qin destroyed the six countries and unified the world, Qin Shihuang connected and repaired the Great Wall of the Warring States Period, which was called the Great Wall of Wan Li. The Ming Dynasty was the last dynasty to overhaul the Great Wall, and most of the Great Wall seen by people today was built at this time.

Extended data:

I. Length

Because of its long history, most of the Great Wall in the early dynasties was incomplete, and the Great Wall built in the Ming Dynasty was well preserved, so people generally called it the Great Wall of the Ming Dynasty, which means the length of the Great Wall.

National Cultural Heritage Administration and the State Bureau of Surveying and Mapping jointly announced on April 8, 2009 that the Great Wall of Ming Dynasty starts from Hushan, Liaoning Province in the east, ends at Jiayuguan, Gansu Province in the west, and passes through Liaoning, Hebei, Tianjin, Beijing, Shanxi, Inner Mongolia, Shaanxi, Ningxia, Gansu and Qinghai provinces/0/56 county, with a total length of 88,556. After passing through the trench of 359.7 kilometers, the natural natural barrier is 2232.5 kilometers.

20 12 On June 5th, National Cultural Heritage Administration announced at the Juyongguan Great Wall in Beijing that after nearly five years' investigation, the total length of the Great Wall in China was 2196.18km, including the Great Wall, trenches, single buildings, enclosed castles and related facilities. 46638.68686866687

This is the first time that China has scientifically and systematically measured the total length of the Great Wall. The investigation and appraisal of the Great Wall not only identified the length of the Great Wall in Ming Dynasty measured in 2009, but also carried out the investigation of the Great Wall resources in Qin and Han Dynasties and other periods.

Second, sideband development.

From the Qin and Han Dynasties to the Ming and Qing Dynasties, many passes along the Great Wall became places or centers for ethnic transactions in the two major economic and cultural systems of agriculture and animal husbandry, and some gradually developed into important towns along the Great Wall. The Great Wall not only ensures the normal development of agricultural economy, culture and animal husbandry economy and culture, but also provides a place and convenience for their exchange and complementarity.

It also plays an important role in mediating the two economies and making the agriculture and animal husbandry economy develop in the direction of mutual assistance. Therefore, the Great Wall not only plays the role of isolating the two economies and cultures, but also shoulders the heavy responsibility of closely linking the two economies and cultures.

During the Qin and Han Dynasties, there were nearly ten million soldiers and civilians. While building the Great Wall, Qin Shihuang began to strengthen the development and construction of border areas, which opened the prelude to stationing farmland to defend the border and developing the border areas. Because it took a long time to build the Great Wall in the Han Dynasty, many people put forward suggestions on immigration, which were adopted and implemented by the Han government.

Immigrants and soldiers guarding the Great Wall cultivated wasteland together, which not only accelerated the economic development of the border region, saved a lot of government military expenditure, but also greatly reduced the pain of long-distance transportation and made Chinese culture spread farther and wider.

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