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 Archaeologists unearth ancient shipwrecks at the excavation site in Zhangwan Village, Tianjin, May 28, 2012. [Photo/Xinhua]  | 
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 An archaeologist clears the surface of a shipwreck at the excavation site in Zhangwan Village, Tianjin, May 28, 2012. [Photo/Xinhua]  | 
