Great Wal
the Great Wall

In the Ming Dynasty "outside" the Great Wall, but also the construction of the "edge" Great Wall and the "three-" The Great Wall. "Clearance" by the Northern Qi Dynasty Great Wall to build the basis, starting from Inner Mongolia and Shanxi Province at the junction of Pianguan west, the East via Yanmenguan, Ping-all related to the Hebei, and then discount to the northeast, the source, Fangshan, Changping Zhu Xian, Direct Juyongguan, and then from the north and east, to conciliate the four customs, and "outside" the Great Wall phase grounding to Zijing Guan as the central task, generally a north-south. "Three-" The Great Wall in many places and the "edge" Great Wall parallel, in some areas between the two cities only in the dozens. In addition, the construction of a large number of the "City." Yanmenguan vicinity of the "city" has as many as 24!

Great Wall is China's ancient working people to create miracles. Since the emperor, built the Great Wall has been a big project. According to records, the emperor used the nearly 1 million laborers to build the Great Wall, the country's total population of 1 / 20! At that time, no machinery, are all rely on human labor, and the working environment is high mountains, cliffs Shenhe. I can see a lot of people did not carry out hard labor, was unable to complete this enormous project.

" Because of the topography, with insurance system Cypriots "to build the Great Wall is an important experience in the emperor when it has definitely down, Sima Qian put it into the" Historical Records "are. After each of dynasties built the Great Wall are conducted in accordance with this principle. All the construction of the city pass all related rights and wrongs of choice in the valley between two mountains, or turn in the river. Pingchuan or go through the exchanges, so can control Xianyao, can save manpower and materials to achieve "When the Commissioner Yifu, a million Fumo" effect. The construction of the castle or beacon towers are also chosen to "be in the Sigu" As for the construction of walls, is to make use of the terrain, such as like Juyongguan, Badaling Great Wall is all built along the mountain ridge on the back, and some lots from the city wall Lateral looking very dangerous, medial Ze Shen is gentle, or "easy to defend and hard to attack" effect. Liaoning Province in the territory of the Liaodong town of the Ming Dynasty Great Wall is a dangerous mountain wall, the wall of Pishan, is the use of the cliff Doubi, slightly Piqiao the cliffs on the Great Wall has become. There are some places full use of Weiya cliffs, rivers and lakes as a natural barrier, I really can be said to be a talent. Great Wall, as one of the great works as a precious heritage of the Chinese nation.
June 25, 2001, the Great Wall as the Spring and Autumn period to the ancient architecture, was included in the fifth instalment of the State Council's approval for a list of key national heritage conservation. Great Wall, is about 12,600.