Two children visit the Jin Shangjing History Museum in Harbin, Heilongjiang province. HARBIN — At the Jin Shangjing History Museum in Harbin, capital of Heilongjiang province, a gleaming, thumb-sized silver coin attracts curious visitors. Minted by the Jin Dynasty government, it was the first official currency to be made of silver in Chinese history, said Hu Zhiyuan, director of the …
