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Great Wall (Ancient Chinese First Military Engineering)

Great Wall (Great Wall), also known as the Great Wall, is the ancient Chinese military defense project, is a very long wall defense building, or the form and the wall is similar to the nature of the defense and wall defense building.
The history of the Great Wall can be traced back to the Western Zhou Dynasty, occurred in the capital Gao Jing (now Shaanxi Xi'an) of the famous allusion "flames play princes" from this. Spring and Autumn Warring States period hegemony, mutual defense, the Great Wall built into the first climax, but this time the length of the construction are relatively short. Qin off six countries after the reunification of the world, the emperor to connect and repair the Great Wall of the Warring States, there are thousands of Great Wall known as . Ming Dynasty is the last overhaul of the Great Wall of the dynasty, today people see the Great Wall is built at this time. 
Great Wall resources are mainly distributed in Hebei, Beijing, Tianjin, Shanxi, Shaanxi, Gansu, Inner Mongolia, Heilongjiang, Jilin, Liaoning, Shandong, Henan, Qinghai, Ningxia, Xinjiang and other 15 provinces and cities. According to the previous cultural relics and surveying and mapping department of the national Great Wall resource survey results, the total length of the Great Wall of 8851.8 km, the Qin and the early Great Wall more than 10,000 km, total length of more than 21,000 km. 
March 4, 1961, the Great Wall by the State Council announced as the first batch of national key cultural relics protection units . In December 1987, the Great Wall was included in the world cultural heritage. 


The Forbidden city  (Ancient Chinese First Military Engineering)

Synonyms The Imperial Palace (Beijing Imperial Palace) generally refers to the Beijing Imperial Palace
Beijing Imperial Palace is China's Ming and Qing dynasties of the Royal Palace, formerly known as the Forbidden City, located in the center of Beijing's central axis, is the essence of ancient Chinese palace architecture. Beijing Palace Museum to the three main hall as the center, covers an area of 720,000 square meters, construction area of about 150,000 square meters, the size of the palace more than seventy seats, housing more than nine thousand. Is the world's largest existing, the most complete preservation of one of the ancient wooden structure.
Beijing Imperial Palace in the Ming Dynasty ancestral Yongle four years (1406 years) began construction, the Nanjing Palace Museum modeled to Yongle eighteen years (1420) built. It is a rectangular city, 961 meters long from north to south, east and west width of 753 meters, surrounded by a wall of 10 meters high, outside the city 52 meters wide moat. The buildings in the Forbidden City are divided into two parts: the outer court and the inner court. Outside the center for the Taihe Temple, and the temple, Paul and Hall, collectively referred to as the three hall, is the place where the state held a ceremony. The center of the inner court is the Palace of Heavenly Purity, the Thai Temple, Kunning Palace, collectively referred to the third house, is the emperor and the Queen's residence is the palace. 
Beijing Imperial Palace known as the world's top five palace (Beijing Palace, France Versailles Palace, the British Buckingham Palace, the White House, the Russian Kremlin), is the national AAAAA-level scenic spots, 1961 was listed as the first national focus Cultural relics protection units,  1987 was listed as a world cultural heritage.Wall was included in the world cultural heritage.