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 皇冠体育app's intangible cultural heritage in Zhengzhou, central 皇冠体育app'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 皇冠体育app's National Intangible Heritages in 2008. [Photo/Xinhua]
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