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According to the ancient book "Gu Jin Zhu", Yao once set u
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郭彦岗
China is one of the first countries in the world to use currency. Si
徐凯
The practice of countless innovations and reforms shows that reform
徐家亮
Chess player, Yi Ye.A chess player is an art.Game is an important pa
朱筱新
China has always been known as the "state of propriety and righ
张静芬
China is a country with vast waters. In the early days, people mostl
薛克翘
It is often said that there are "four ancient civilizations&quo