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#great wall #china #defensive wall #border wall #ancient defense #chinese history #fortification

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#citadel #fortified hill #ancient defense #hilltop fortress #greek citadel

🛡️🧱🇨🇳

#great wall of china #defensive wall #china history #fortification #border wall #ancient defense

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#pharaoh's fortress #egyptian military #ancient defense #garrison #buhen fort