The Great Wall, is a military defense project in ancient China. It is tall, sturdy and continuous and it is used to limit enemy riding. The Great Wall is not a purely isolated city wall, but a defense system that combines a city wall as the main body and a large number of cities, barriers, pavilions, and standards.
The history of the construction of the Great Wall can be traced back to the Western Zhou period. The famous allusion of the sacred princes of the capital, Xijing (now Xi’an, Shanxi) originated here. During the Spring period, the Autumn Period and the Warring States Period, the countries competed for hegemony and defended each other. The Great Wall built into the first climax, but the length of construction was relatively short. After Qin unified the six countries to unify the world, Qin Shihuang connected and repaired the Great Wall of the Warring States, and was known as the Great Wall. The Ming Dynasty was the last dynasty to overhaul the Great Wall. The Great Wall that people saw today is mostly built at this time. The Great Wall resources are mainly distributed in 15 provinces, autonomous regions, such as Hebei, Beijing, Tianjin, Shanxi, Gansu, Inner Mongolia, Heilongjiang, Jilin, Liaoning, Shandong, Henan, Qinghai, Ningxia and Xinjiang. During the period, Shaanxi Province was with the richest resources in China’s Great Wall. The length of the Great Wall in China was 1,838 kilometers. According to the results of the National Great Wall Resources Survey of the Cultural Relics and Mapping Department, the total length of the Ming Great Wall is 8851.8 kilometers, and the Qin and Han Great Walls exceed 10,000 kilometers, with a total length of more than 21,000 kilometers.
Why we built the Great Wall at that time? In order to prevent the invasion of northern nomads, several countries in the north of the Warring States period, Yan, Zhao, Qin, etc., they have all repaired the Great Wall. After Qin Shihuang unified the six countries, they connected these great cities and built the world-famous Great Wall. In order to prevent the northern Mongolian attacking, the Great Wall was rebuilt. The Great Wall is a great miracle created by the working people of ancient China and a testimony to China’s long history. In December 1987, the Great Wall was listed as a World Heritage Site.