A big city wall
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This huge wall surrounding the city is 15 kilometers in total length. |
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Cannons are mounted on the wall to defend the gateway. |
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Rooftops inside the wall. Notice that every rooftop has a solar water heater. |
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Me and the tower I constructed on the wall from bricks that were laying there in a heap. |
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Bi Sheng's cousin Bi Kan and the tower I constructed. |
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