Photo taken on Oct. 29, 2012, shows a piece of tri-colored glazed porcelain painting in Luoyang, central China's Henan Province. The painting was created with technique of Sancai, a Chinese porcelain characterized by a glaze with three intermingled colours. 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. (Xinhua/Wang Song)

Photo taken on Oct. 29, 2012, shows a piece of tri-colored glazed porcelain painting in Luoyang, central China's Henan Province. The painting was created with technique of Sancai, a Chinese porcelain characterized by a glaze with three intermingled colours. 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. (Xinhua/Wang Song)

Photo taken on Oct. 29, 2012, shows a piece of tri-colored glazed porcelain painting in Luoyang, central China's Henan Province. The painting was created with technique of Sancai, a Chinese porcelain characterized by a glaze with three intermingled colours. 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. (Xinhua/Wang Song)

A worker makes a piece of tri-colored glazed porcelain painting in Luoyang, central China's Henan Province, Oct. 29, 2012. The painting was created with technique of Sancai, a Chinese porcelain characterized by a glaze with three intermingled colours. 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. (Xinhua/Wang Song)

Photo taken on Oct. 29, 2012, shows two pieces of tri-colored glazed porcelain paintings in Luoyang, central China's Henan Province. The painting was created with technique of Sancai, a Chinese porcelain characterized by a glaze with three intermingled colours. 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. (Xinhua/Wang Song)

Photo taken on Oct. 29, 2012, shows a piece of tri-colored glazed porcelain painting in Luoyang, central China's Henan Province. The painting was created with technique of Sancai, a Chinese porcelain characterized by a glaze with three intermingled colours. 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. (Xinhua/Wang Song)

A worker makes a piece of tri-colored glazed porcelain painting in Luoyang, central China's Henan Province, Oct. 29, 2012. The painting was created with technique of Sancai, a Chinese porcelain characterized by a glaze with three intermingled colours. 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. (Xinhua/Wang Song)

Photo taken on Oct. 29, 2012, shows a piece of tri-colored glazed porcelain painting inlaid with small stones in Luoyang, central China's Henan Province. The painting was created with technique of Sancai, a Chinese porcelain characterized by a glaze with three intermingled colours. 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. (Xinhua/Wang Song)

A designer makes a creation with technique of Sancai, a Chinese porcelain characterized by a glaze with three intermingled colours, in Luoyang, central China's Henan Province, Oct. 29, 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. (Xinhua/Wang Song)