Fortchai gou Zhangjiakou region anorth of the Great Wall.

张家口地区的柴沟堡是个塞外古镇.

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Here, you can most out beyond the Great Wall scenery, ancient combat the march of knowledge.

在这里, 可以尽览塞外风光, 了解古代行军作战的知识.

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Plunger mantle has a hexagonal structure and also is fitted with special tools.

柱塞外套采用了六角结构,同时还配有专用工具.

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