hi, what the beacon towers were used for? were they only built on the wall?

Question

Hi, what the beacon towers were used for? Were they only built on the wall? Can we see them in other places?

Mr.Goodman · Answer

Beacon towers are the most important component of the defensive project on the Great Wall. They are built continually to pass military messages. This site has details for your reference:
https://www.travelchinaguide.com/china_great_wall/construction/tower/

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