A silver ingot is discovered at a historical site in Pengshan, Southwest China’s Sichuan Province, Jan. 5, 2016. Zhang Xianzhong (1606-47), the leader of a peasant revolt during the end of the Ming Dynasty (1368–1644), sank numerous boats filled with treasures in an area covering about one million square meters near a wharf in Pengshan. (Photo: China News Service/Liu Zhongjun)
