Combo photo taken on July 27, 2017 shows colored glaze ornaments made in a workshop in Boshan District of Zibo, East China's Shandong province. 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. [Photo/Xinhua]