Photo taken on Aug 4, 2015 shows an archaeologist clearing Wuzhu coins, the common currency in wide circulation during the Western Han Dynasty (206 BC-AD 24), at the excavation site of royal tombs of Marquis of Haihun State, which date back to over 2,000 years ago, in Nanchang, capital of East China's Jiangxi province. [Photo/Xinhua]