Staff members display dolls of Emperor Zhu Yuanzhang of Ming Dynasty (1368-1644), whose robe was made of Nanjing Yunjin (cloud brocade), during the opening ceremony of a post office featuring Yunjin brocade inside a museum in Nanjing, capital of east China's Jiangsu province, May 18, 2015, also the International Museum Day. [Photo/Xinhua]