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傅抱石, 雨花台颂, 1958
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by Covell Meyskens
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This picture is most likely of workers building the Hunan-Guizhou Railroad. The name is inspired by a Mao poem that says"“一桥飞架南北,天堑变通途.” Source
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For some historical background to, Mao's thoughts on building a Chinese Navy. Source