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The Bronze Age is the era in which humans used bronze to make main p
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屈宝坤
To understand what are the great scientific and technological achiev
陈久金
The concept of day comes from the alternation of day and night, but
毕诚
According to the order of historical time, it is written in plain la
王炳照
The name of the Academy originated from Lizheng Academy and Jixian H
郭齐家
Around the Xia Dynasty before the 17th century BC, there were school
The Chinese feudal dynasty established a system of selecting officia