Tri-colored glazed pottery technique inheritor Gao Shuiwang (right) teaches his apprentice in Nanshishan village, Mengjin county, Luoyang, Central China's Henan province, Aug 15, 2018. Gao is a leading figure in the revival of tri-colored glazed pottery, or Sancai, a Chinese porcelain characterized by a glaze with three intermingled colors. The producing technique of Sancai, which flourished in the Tang Dynasty (618-907 AD), was very complex and listed as one of China's National Intangible Heritages in 2008. Nanshishan village in Henan is regarded as an important village of Sancai culture, with more than 70 enterprises now engaging in the industry. [Photo/Xinhua]