Ge Yuansheng compares coal waste with one of his colored glaze artworks made of coal cinder in Taiyuan, on March 13. Ge has been applying his skills of colored glaze firing to waste coal cinders for five years, after developing an interest in stones of strange shapes and discovering many coal cinders near his workshop. Now, after undergoing dozens of processes, in the masterful hands of Ge the waste material is transformed into various delicate artworks. [Photo/Xinhua]