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长城东起辽宁虎山,西达甘肃嘉峪关,总长度约2万多公里,包括长城墙体、壕堑、单体建筑、关堡和相关设施等长城遗产4万多处。约公元前220年,一统天下的秦始皇,将修建于早些时候的一些断续的防御工事连接成一个完整的防御系统,用以抵抗来自北方的侵略。在明代(公元1368~1644年),又继续加以修筑,使长城成为世界上最长的军事设施。它在文化艺术上的价值,足以与其在历史和战略上的重要性相媲美。
The Great Wall east of Hushan in Liaoning, west of Jiayuguan in Gansu, a total length of about more than 20,000 kilometers, including the Great Wall walls, trench, single buildings, and other related facilities Fort Great Wall heritage more than 40,000. About 220 BC, the Qin Shi Huang, dominated by the world, built some of the intermittent fortifications built earlier to form a complete defensive system to resist aggression from the north. In the Ming Dynasty (AD 1368 ~ 1644), they continued to be built to make the Great Wall the longest military facility in the world. Its cultural and artistic value is enough comparable to its historical and strategic importance.