Colored glaze makers work in a workshop in Boshan District of Zibo City, east China's Shandong Province, July 28, 2017. Zibo, one of the most famous places for the colored glaze products, capable of mass production since Tang Dynasty (618-907AD), is still a key player in the colored glaze market covering more than 100 countries and regions. (Xinhua/Guo Xulei)
