Answered by James
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May. 25, 2023 18:56
1. Take advantage of the terrain, local materials along the mountains, and use steep ridges, cut the mountains to get neat stones. Filled with lime, the base of the Great Wall was very solid.
2. The loess region is mainly built with earth ramming. In the desert area, small sand stones were laid layer by layer with reeds and red willow branches. For example, the Great Wall of Han Dynasty near Yumenguan. The sand and stones of the preserved wall have been compacted and are not easy to be damaged.
3. The Great Wall of the Ming Dynasty was built with bricks and stones in important areas. They opened kilns on the spot to burn stones to get lime to make bricks and tiles.