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洪瑞麟, 矿工, 1954
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by Covell Meyskens
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The photo was taken by their father during Spring festival in front of 浙江西山医院. Source
Wuchang First Railroad School, Hubei (武昌铁一中74届九班) Source
四川江北 Source
These images appear to all be from 1974, when the submarine was completed. Source Source 2