The Great Wall of China

The Great Wall of China a legitimate defensive military prominent past and rarely in human architectural history. It is a symbol of the Chinese nation, and did not appear intelligent ancestors of the Chinese, but also embodies the effort exerted in which race and blood. And known in the ancient world with its history and the magnitude of its fortifications and greatness and strength .began building the Great Wall of China during the Spring and Autumn Period and the Warring States era before more than 2,000 years. Begins the fence of Jia Yu Guan Pass Gan Su Province in the west and ends at Shan Hai Guan Pass, Hebei Province in the east through the mountains towering like a giant dragon lying on the territory of the vast North China .It is the oldest and largest defense project in China and the world.

And was included in the World Cultural Heritage List identified by UNESCO of the United Nations in 1987. began kingdoms different in the Spring and Autumn (in 770 BC. M. to in 476 BC). entrusted Warring States (from 475 BC. M. to in 221 BC).building walls on its borders in order to defend itself, and become the city walls, the oldest part of the Great Wall of China. In 221 BC. United Emperor Shi Huang Di warring kingdoms, and established the first unified state with a central authority in the history of China, the Qin Dynasty. In order to stabilize its borders and repel aggression national minority Xiong Nu who lived in areas north of the Qin Dynasty property, linking Shi Huang Di walls that were built Warring States which form fence Qin Dynasty property which reached a length of more than 5000 km and starts from the eastern province of Liao Ning east China and ends at Lin Tao Gan Su Province, west China. After that, I continued successive royal families in China to build walls on this basis, and the length of the walls built by each of the Han Dynasty and the Ming Dynasty 5,000 km

The total length of the walls built by the various royal families 50 thousand kilometers. The Great Wall of China is not just a wall, but is a defensive integrated project consists of defensive walls and watchtowers corridors Alastairatejah and barracks and warning towers and other defense facilities.

And controls the defense of this project integrated military command system consists of different levels. Take Wall of China in the Ming Dynasty as an example, this was the fence that starts from the river Alwah east and ends at the corridor Jia Yu Guan westward total length 7,000 km divided into nine administrative regions military, and each region chief executive of managed separately and is responsible for the repair fence within the region The restoration is also responsible for defense affairs in the region or help the military regions neighboring on defense affairs,according to the order of the Ministry of National Defense. The number of soldiers stationed on the fence line in the Ming Dynasty was about a million troops. walls are extended a key part of the project Defensive Wall of China.

And built over the mountains towering walls or dangerous locations by geographic terrain plains and defense needs. The walls are often built in the plains or high points of interest and extremely durable, the walls built on hazardous sites over the mountains, they are relatively low and narrow, in order to provide manpower and construction expenses. The average height of the wall in the corridor Jiu Yong Guan Ba Da Ling or within the provinces of Hebei and launching CNN and Gan Su about 7 or 8 meters and the thickness of the base 6 or 7 meters, and the thickness of peak 4 or 5 meters.

and built on the outside wall of an additional rise about two meters, and on this wall openings overhead surveillance and slots infrastructure to fire or drop stones. In the very important areas, built on multiple fence walls to prevent the rise of enemies fence.

The very great Chinese civilization built on wisdom and calm.