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. [Photo/Xinhua]