嘉靖和晚明是明代九边说法形成与演变的两个主要时期。

Jiajing and late Ming are two major historical periods that chiu-pien (the nine frontier fortifications system) theories shaped and evolved.

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计算分析了南京九华山隧道工程开挖爆破对明古城墙的影响。

Combining with JiuhuashanTunnel Project, influence of blasting in tunnel excavation on ancient wall is calculated and analyzed.

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明设九镇防边，一批戍边干才脱颖而出。

Therefore, the nine fort towns were set up to defend the frontier, where some defending talents showed themselves.

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