1 has a long history.
Qin Changcheng was founded in the 3rd century BC with a long history of more than 2,300 years. The Great Wall in China has a history of at least 2,700 years if it can be traced back to the weekend in the West and the Great Wall during the Spring and Autumn Period and the Warring States Period. Even the Great Wall built in the Ming Dynasty has a history of more than 600 years. It is very rare, precious and rare in the world that such an ancient great building is still well preserved.
2, the length is amazing
From the Spring and Autumn Period to the Ming Dynasty, the Great Wall was maintained and built to varying degrees. The Great Wall is located in 16 provinces, municipalities and autonomous regions in the Yellow River and Yangtze River basins. It has east-west direction and north-south direction, with a total length of 108000 Li (54000km). Among them, Wan Li is thousands of miles away, including Qin Changcheng, Han Great Wall and Ming Great Wall. ?
This project is huge.
According to scientists' rough calculation, if a wall with a width of 1 m and a height of 5 meters is built from the soil, bricks and stones of the Ming Great Wall, it can circle the earth. If it is used for pavement with a thickness of 0.3m and a width of 5m. This road can go around the earth three times. ?
4. Exquisite structure
Land where the Great Wall is built, or mountains and deep valleys, rivers and lakes, desert grasslands, etc. It is extremely complicated and dangerous, especially the construction work. To build the Great Wall, we need to understand and apply various scientific and technical knowledge, such as mathematics, mechanics, geometry, surveying, geology, architecture, histology, transportation and so on.
Symbolic significance of the Great Wall:
As a symbol of the Chinese nation, the Great Wall was naturally formed in the historical process, and was recognized and accepted by the world in the struggle of China people against imperialist aggression, especially in the struggle of the whole nation against Japanese imperialism. In the face of national life and death, the Great Wall, a symbol of national defense and national unity, has naturally been promoted to the symbol of the whole Chinese nation, arousing the anti-Japanese war consciousness of the whole nation.
1933 War of Resistance against Japanese Aggression, the Great Wall, shocked China and foreign countries and opened the first heroic chapter in the history of War of Resistance against Japanese Aggression. "Vowing to live and die with the Great Wall" has become an unchangeable oath of anti-Japanese soldiers. "Get up, people who don't want to be slaves, and build our flesh and blood into our new Great Wall!"
March of the Volunteers sang the voice of all the people of China; Ballad of the Great Wall also aroused the patriotic enthusiasm of hundreds of millions of people in China with its unique artistic appeal. March of the Volunteers later became the national anthem of the people of China. People can always feel a patriotic passion when they hear or sing it, just because the Great Wall can arouse the patriotic enthusiasm of hundreds of millions of people in China.