V century BC, the Warring States, when the turn, Uncooperative side by side, their king, long cracks at each other, so in their own territory on building a wall to resist the enemy violations. According to historical records, the State of Chu in the seventh century BC, when the modern Henan, Hubei, built along the walls, known as the city side, the first construction of the Great Wall of China. Later, Qi, Wei, Qin, Yan, Zhao and other countries are also persons on their own Xinjiang to build tall walls. For such a long prison walls, and walls of the city in general is different than the surrounding closed, so called the Great Wall or placanticline. States to build the Great Wall, since as starting and ending, in disorder, with east-west, with north-south, and see the Great Wall today is not the same. Some have disappeared from the ground, some still standing.
Warring States Period of the Great Wall, built mostly with rammed earth, smaller, disconnected. Qi Great Wall is the east-west, West Jiu Pingyin, through the northern foot of Mount Tai, the east sea.
