Wan Li Great Wall has a long history and magnificent projects. It is one of the new seven wonders, ranking first in the selection of "New Seven Wonders of the World".
According to a rough estimate, the number of the Great Wall in Wan Li only existed in the Ming Dynasty. If a wall with a thickness of 1 m and a height of 5 meters is made of masonry and earthwork, it can surround the earth for more than one week. If it is used to pave a road with a width of 5 meters and a thickness of 35 centimeters, it can circle the earth three or four times. It is distributed in the vast land of northern and central China, with a total length of more than 50,000 kilometers.
As the saying goes, "Up and down for more than 2,000 years, more than 100,000 miles vertically and horizontally". Such a huge project is unique not only in China, but also in the world. The Great Wall consists of four parts: the pass, the city wall, the city platform and the beacon tower. Generally speaking, passes are built in dangerous places. It is located in Juyongguan and the Great Wall near Bada block in the suburbs of Beijing. The average height of the city wall is 7.8m, and the highest is14m.
The outside of the city wall is usually built on a steep cliff to increase the difficulty of siege. Not far apart, there is an arch called "ticket gate", where the soldiers guarding the city go up and down. The top of the city wall is 5.8 meters wide and can accommodate five horses. The city platform is a group of square buildings that rise from the top of the wall every 300 to 500 meters. It is a place for patrolling and keeping watch. This beacon tower is dedicated to transmitting military information.
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The origin of Wan Li Great Wall:
The Great Wall was built in the Zhou Dynasty. Zhou Youwang's bonfire drama The Prince is the earliest allusions to the Great Wall. As early as the Spring and Autumn Period in the 7th century BC, in order to resist foreign invasion, the State of Chu first built the "Chu Fangcheng", which started the construction of the Great Wall in Wan Li recorded in the history of China. During the Warring States Period, the Great Wall was also built in Qi, Wei, Zhao, Qin, Yan, Zhongshan and other countries.
Among them, Qin, Zhao and Yan are adjacent to Xiongnu, a powerful nomadic people in the north. While building the Great Wall to jointly defend the vassals, they also built the "Anti-Hu Great Wall" in the north. Since then, almost all kings have strengthened and built the Great Wall. After the reunification of Qin, the Great Wall, which divided countries, was abandoned, and the Great Wall on the northern border of Qin, Zhao and Yan was connected.
Expansion and renovation, for the first time, formed the Great Wall from Lintao in the west to Wan Li in Liaodong in the east, thus the Great Wall of Wan Li appeared. According to records, Qin Shihuang used nearly one million laborers to build the Great Wall, accounting for one twentieth of the country's total population at that time. The Han Dynasty continued to build the Great Wall to resist the invasion of Xiongnu in the north.
From Emperor Wen of Han Dynasty to Xuan Di, a Great Wall with a total length of nearly 10,000 kilometers was built, starting from Dawaner Shicheng in the west and reaching the north bank of Yalu River in the east. At that time, there was no machinery, all the labor was done by manpower, and the working environment was very difficult, with mountains and cliffs. The Great Wall was built in the Spring and Autumn Period and the Warring States Period with a history of more than 2,000 years. Today's Wan Li Great Wall refers to the Great Wall built in the Ming Dynasty.
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