Staff work at a workshop of a Ru porcelain manufacturer in Baofeng County, central China's Henan Province, Nov. 22, 2017. Ru porcelain was named after one of five famous kilns producing the most beautiful and distinctive porcelains in Song Dynasty (960-1279). The five famous kilns are Guan Kiln, Ru kiln, Jun kiln, Ge Kiln and Ding kiln. And Baofeng county was famous for producing Ru porcelain since China's ancient times. Up to now, over 60 manufactures produce more than 200,000 pieces per year. (Xinhua/Ren Zhenglai)

Staff work at the workshop of a Ru porcelain manufacturer in Baofeng County, central China's Henan Province, Nov. 22, 2017. Ru porcelain was named after one of five famous kilns producing the most beautiful and distinctive porcelains in Song Dynasty (960-1279). The five famous kilns are Guan Kiln, Ru kiln, Jun kiln, Ge Kiln and Ding kiln. And Baofeng county was famous for producing Ru porcelain since China's ancient times. Up to now, over 60 manufactures produce more than 200,000 pieces per year. (Xinhua/Ren Zhenglai)

A staff member displays a Ru porcelain necklace at Baofeng County, central China's Henan Province, Nov. 21, 2017. Ru porcelain was named after one of five famous kilns producing the most beautiful and distinctive porcelains in Song Dynasty (960-1279). The five famous kilns are Guan Kiln, Ru kiln, Jun kiln, Ge Kiln and Ding kiln. And Baofeng county was famous for producing Ru porcelain since China's ancient times. Up to now, over 60 manufactures produce more than 200,000 pieces per year. (Xinhua/Ren Zhenglai)

Ru porcelain products are displayed at an exhibition hall of Ru kiln in Baofeng County, central China's Henan Province, Nov. 21, 2017. Ru porcelain was named after one of five famous kilns producing the most beautiful and distinctive porcelains in Song Dynasty (960-1279). The five famous kilns are Guan Kiln, Ru kiln, Jun kiln, Ge Kiln and Ding kiln. And Baofeng county was famous for producing Ru porcelain since China's ancient times. Up to now, over 60 manufactures produce more than 200,000 pieces per year. (Xinhua/Ren Zhenglai)

Combo photo taken on Nov. 21, 2017 shows the porcelain wares heated inside an oven at a Ru porcelain manufacturer in Baofeng County, central China's Henan Province. Ru porcelain was named after one of five famous kilns producing the most beautiful and distinctive porcelains in Song Dynasty (960-1279). The five famous kilns are Guan Kiln, Ru kiln, Jun kiln, Ge Kiln and Ding kiln. And Baofeng county was famous for producing Ru porcelain since China's ancient times. Up to now, over 60 manufactures produce more than 200,000 pieces per year. (Xinhua/Ren Zhenglai)

A staff member works at the workshop of a Ru porcelain manufacturer in Baofeng County, central China's Henan Province, Nov. 21, 2017. Ru porcelain was named after one of five famous kilns producing the most beautiful and distinctive porcelains in Song Dynasty (960-1279). The five famous kilns are Guan Kiln, Ru kiln, Jun kiln, Ge Kiln and Ding kiln. And Baofeng county was famous for producing Ru porcelain since China's ancient times. Up to now, over 60 manufactures produce more than 200,000 pieces per year. (Xinhua/Ren Zhenglai)