The Great Wall, also known as the Great Wall of China, is an ancient Chinese military defensive project. It is a tall, sturdy, continuous and long-lasting battlement that restricted the enemies from crossing over.
The Great Wall is not a merely isolated wall, but a defense system that combines walls, kiosks and various barriers. The history of the Great Wall construction can be traced back to the Western Zhou Dynasty (1046 BC – 771 BC).
The Great Wall Resources are mainly distributed in 15 provinces and regions including Hebei, Beijing, Tianjin, Shanxi, Shaanxi, Gansu, Inner Mongolia, Heilongjiang, Jilin, Liaoning, Shandong, Henan, Qinghai, Ningxia and Xinjiang.
According to the National Great Wall Resources Survey conducted by the Cultural Relics and Surveying and Mapping Department, the total length of the ancient Great Wall exceeded 21,000 kilometers.
On March 4, 1961, the Great Wall was announced by the State Council as the national key cultural relic. In December 1987, the Great Wall was included in the World Cultural Heritage.