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 Bronze coins known as wuzhuqian unearthed from the Han Dynasty (202 BC - AD 220) family tombs in Guanghan city, China's Southwest Sichuan province, Oct 11, 2013.[Photo/CFP]  | 
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 A full-sized duck pottery figurine unearthed from the Han Dynasty (202 BC - AD 220) tombs in Guanghan city, China's Southwest Sichuan province, Oct 11, 2013.[Photo/CFP]  | 
