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The Great Wall of China is a piece of architecture that was build during the warring states period. (战国). This shows the amount of effort that the peasants put in to build this wall and how cruel the past society of China was. Qin Shi Huang sacrificed so many lives just to achieve this aim of building the wall that has a total of more than 20000 kilometres to repel the enemies. This shows that they were smart enough to build a wall to repel the enemies than to keep fighting wars with the enemies.