Was the Great Wall of China a realistic deterant

I once received a sweatshirt from some tourist shop at the Great Wall. It showed a picture of the Wall with a caption in Chinese characters. I would always joke that it said, “My mom went to the Great Wall of China and all I got was this lousy sweatshirt.” I wore it in a Chinese restaurant one time, and a Chinese-speaking server said the closest he could figure out was “Thousand Mile City”.

As so often happens when I read a thread on SD, I have to go and do some research and expand my knowledge. This quote seems to sum up why a powerful ruler would build a wall.

I suppose that the great castles that the Normans built all over Britain served the same purpose.

I recall reading something once about the improved Great wall (600AD) was responsible for redirecting the Mongols under Attila to head west to Europe instead.

(IIRC numerous walls were built to 200BC; the next serious upgrade was 600AD, with a final massive building project in 1400AD that gave us those massive sections, particularly around Beijing, that we see on the news and think of as “The Great Wall”)

This was once common historical speculation, but is no longer believed. The Huns may or may not have originally migrated from Mongolia, but even if they did it was a long, slow process over many generations and not a simple cause and effect.

You don’t realize how common this is on the Dope.