Construction of the
Great Wall began during the Spring and Autumn Period to the
Warring States Period (770 BC 221 BC), Several ducal
states built wall fortifications along the precipitous
mountain ridges to ward off the plunder of nomadic people
and the invasion of each other. In 221 BC, Qin Shi Huang
ordered to link the walls up after he united China.
During the
following dynasties, the Great Wall was destroyed
continuously by natural disasters and human beings. Amongst
the remained broken pieces of walls, those constructed in
Ming Dynasty are the most well-preserved and splendid
ones.
The
Great Wall stretches some 6,300 km from Jiayuguan Pass in
the west to the Yalujiang River in the east, traversing 11
provinces, municipalities and autonomous regions. It is the
most magnificent ancient military defenses work and one of
the most remarkable ancient buildings in the world.