The decertified land has passed the Great Wall and spread to inside the pass . Large part of the Great Wall 's wall , beacon tower , watches tower are destroyed by human being . Furthermore , the architectural style of the Great wall is a phenomenon in the history of construction in the world . Since the weaponry only consisted of swords and spears , lances and halberds , and bows and arrows in the ancient times , walls with passes , watchtowers , signal towers , together with moats became...











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