China, officially the People’s Republic of China, is a country in East Asia. It is the world’s most populous country, with a population of more than 1.4 billion. China spans five geographical time zones and borders 14 different countries, the second most of any country in the world after Russia.
The Great Wall of China is a series of fortifications that were built across the historical northern borders of ancient Chinese states and Imperial China as protection against various nomadic groups from the Eurasian Steppe.
The Great Wall was continuously built from the 3rd century BC to the 17th century AD on the northern border of the country as the great military defense project of successive Chinese Empires, with a total length of more than 20,000 kilometers.
The Great Wall begins in the east at Shanhaiguan in Hebei province and ends at Jiayuguan in Gansu province to the west. Its main body consists of walls, horse tracks, watch towers, and shelters on the wall, and includes fortresses and passes along the Wall. The Great Wall reflects collision and exchanges between agricultural civilizations and nomadic civilizations in ancient China.
It provides significant physical evidence of the far-sighted political strategic thinking and mighty military and national defense forces of central empires in ancient China, and is an outstanding example of the superb military architecture, technology and art of ancient China. It embodies unparalleled significance as the national symbol for safeguarding the security of the country and its people.
1500 years before the construction of the Ming Dynasty wall was constructed, the Han Dynasty defended the borders of China from invaders with a Great Wall of their own.