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Although stone walls were built in China during the Warring States ( 481-221 BC ), mass conversion to stone architecture did not begin in earnest until the Tang Dynasty ( 618-907 AD ).

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Although stone walls were built in China during the Warring States ( 481-221 BC ), mass conversion to stone architecture did not begin in earnest until the Tang Dynasty ( 618-907 AD ).

Edit
Promote Demote Fragment Fix

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