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China's “Underground Great Wall”

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  • China's “Underground Great Wall”

    In ancient Chinese history it is recorded that The Northern Song Dynasty (960-1127 AD) battled for 200 years with the Liao and Jin Dynasties, which at the time were ruled by minority races from China's Northern Territories, the Khitan and Jurchens respectively. The Northern China Plain was an endless flat ground, with no mountains or rivers that could be used to help defend against the northerners. How then, did the weaker Song Dynasty manage to survive for such a long period of time?

  • #2
    The Song were weaker?


    -chinoook
    chinoook's 1st law: Structurally weak walls tend to have double structures.
    chinoook's 2nd law: Newer walls are built next older walls, not over them.
    chinoook's 3rd law: Similar problems lead to similar solutions.

    The most dangerous worldview is the worldview of people, who have not viewed the world. (Alexander von Humboldt (1769-1859), German naturalist and explorer)

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