The Great Wall is a military fortification in ancient China. It is a tall, solid and continuous wall, which is used to limit the actions of the enemy The Great Wall is not a simple isolated city wall, but a defensive system with the city wall as the main body and a large number of cities, barriers, pavilions and landmarks.

The history of the construction of the Great Wall can be traced back to the Western Zhou Dynasty, from which the famous allusion "Beacon Fire Drama", which took place in the capital, Haojing (now Xi'an, Shaanxi), originated During the Spring and Autumn Period and the Warring States Period, all countries fought for hegemony and defended each other After Qin exterminated the six countries and united the world, the First Emperor of Qin connected and repaired the Great Wall of the Warring States Period, which began to be called the Great Wall. The Ming Dynasty was the last dynasty to overhaul the Great Wall. Most of the Great Wall people saw was built at this time

The Great Wall resources are mainly distributed in 15 provinces, autonomous regions and municipalities directly under the Central Government in Hebei, Beijing, Tianjin, Shanxi, Shaanxi, Gansu, Inner Mongolia, Heilongjiang, Jilin, Liaoning, Shandong, Henan, Qinghai, Ningxia and Xinjiang The length in Hebei Province is more than 2000 kilometers, and the length in Shaanxi Province is 1838 kilometers. According to the survey results of the national Great Wall resources by the Cultural Relics and Surveying and Mapping Department, the total length of the Great Wall in the Ming Dynasty was 8851.8 kilometers, and the length of the Great Wall in the Qin and Han Dynasties and early periods was more than 10000 kilometers, with a total length of more than 21000 kilometers The existing cultural relics of the Great Wall include the wall, trench, boundary trench, single building, fortress and related facilities, totaling more than 43000