A craftsman shows the technique of making Sancai, a Chinese porcelain characterized by a glaze with three intermingled colours, to vistors during an activity showcasing China's intangible cultural heritage in Zhengzhou, central China's Henan province, on Nov 2, 2012. The producing technique of Sancai, which dates back to the Tang Dynasty (618-907 AD), was listed as one of China's National Intangible Heritages in 2008. [Photo/Xinhua]
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