以史为镜，可以知兴替。历史留了许多宝贵的财富给我们，而我们得到及使用的却很少。为了得到历史遗留下来的财富，人们做过了许多的努力去探究去思索。随着时间的推移，人们发现的越来越多，考证得越来越精确，一定在某一天能还原出历史的真实。
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