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九边重镇

网络nine defense areas

九边重镇

九边重镇

九边重镇

nine defense areas

九边重镇,nine defense... ... ) frontier county 边镇 ) nine defense areas 九边重镇 ) chiu-pien 九边 ...

1

With the passage of time , it has turned into the most telling witness of the Nine Important Defense Areas of human civilization .

随着时间的推移，已成为见证 “九边重镇 ”人类文明的珍品。

2

Illustration on the Defense System Distribution of the Nine Important Defense Areas in the Great Wall of Ming Dynasty

明长城九边重镇防御体系分布图说

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