Great Wall of China is a military stockade building era of ancient China, the development needs a long time and most large scale buildings in the world. Great Wall of China is across from the western to eastern China, with a length of 7000 kilometers. Because of its function as a fortress of defense, the Great Wall was built by following the complex topography of the mountains and through some tough terrain, including deserts, grasslands and swamps. Intelligence and calculation of development, seen from the Great Wall of building structures that have different structures in each field that different. Not only that, the fort on defense is also coherent with the steep mountain slopes that are too difficult to climb by the enemy.
The Great Wall was built using large stones mixed with soil and rock fragments, with a height of approximately 10 meters and 5 meters wide. Width is quite strong and thick as a fortress of defense. With adequate width, the fort was very easily could be used for a variety of maneuvers warrior kingdom of ancient China, as well as facilitate the distribution of food and weapons for the soldiers.
While on the inside of the wall was built doors and stairs to climb down onto the defensive wall. Great Wall that extends connected with a castle and towers of fire in every sector. Where is the castle functioned as a storage of food and weapons, as well as a resting place for soldiers in peace time. At the time of the attack, the fire tower will be used, so at night visible sign of fire and smoke visible during the day, and news of enemy attack can spread throughout the country for a short time.
Development of the Great Wall of China began in the 9th BC. At that time the central government in China, connecting the castle and the tower of fire with one long wall, in order to fend off attacks from northern ethnic Chinese. During Chunqiu empire, the internal confrontation in countries principality. States that are fighting, forward consecutive this Great Wall construction on the hill and mountain for their own defense.
In 221 BC, Emperor Qinshihuang managed to unite China. After that, Emperor Qinshihuang ordered that the walls built by various countries principality is connected into one large wall, as a stronghold of defense to ward off cavalry attacks ethnic nomadic, Mongolia grassland in northern China. Great Wall at that time had reached 5000 kilometers in length more. Development of the Great Wall will not stop. During the Han Dynasty, after the collapse of the Qin Dynasty, the Great Wall was extended again to 10 thousand kilometers more. And in the history of 2000 years later, the authorities at various times never stop building the Great Wall, so the total length reached 50 thousand kilometers, enough to round the earth once more.
Great Wall which is now mostly a big wall that was built during the Ming Dynasty, which ruled between the years 1368 and 1644. The end wall of the west side stems from the Jiayu Fortress in Gansu Province, western China, and its eastern edge lies on the edge of the Yalu River, Liaoning Province, Northeast China, after passing through 9 provinces, cities and autonomous regions, along the 7300 kilometers.
In crucial places of the Great Wall, such as strategic path, the crack of the mountain and the mountain border with the sea, usually built loft large gate. Attic gate not only looks magnificent, but also reflects the brilliant art of the ancient Chinese architecture. Now some of the attic that gate has been turned into a tourist attraction, for example attic Shanhaiguan Gate at the east end of the Great Wall, dubbed as China’s number one gate loft, and loft Juyongguan Gate, sector Badaling Great Wall, in the vicinity of Beijing.
The Great Wall is the result of ongoing efforts for hundreds of years and the result of intelligence in ancient Chinese people. How difficult development project of the Great Wall in ancient times are still hard to imagine, with limited human infrastructure at the time. In 1987, the Great Wall of China is listed of World Heritage by the United Nations.