A visitor takes photo of an exhibit during an exhibition on Luoyang tri-colored glazed artworks in Zhengzhou, central China's Henan Province, Sept. 1, 2019. A total of 300 pieces of artworks were displayed on the exhibition. (Xinhua/Li An)

Visitors view an exhibit during an exhibition on Luoyang tri-colored glazed artworks in Zhengzhou, central China's Henan Province, Sept. 1, 2019. A total of 300 artwork were displayed on the exhibition. (Xinhua/Li An)

A visitor takes photo of exhibits during an exhibition on Luoyang tri-colored glazed artworks in Zhengzhou, central China's Henan Province, Sept. 1, 2019. A total of 300 pieces of artworks were displayed on the exhibition. (Xinhua/Li An)

A visitor takes photo of an exhibit during an exhibition on Luoyang tri-colored glazed artworks in Zhengzhou, central China's Henan Province, Sept. 1, 2019. A total of 300 pieces of artworks were displayed on the exhibition. (Xinhua/Li An)

A visitor takes photo of the exhibits during an exhibition on Luoyang tri-colored glazed artworks in Zhengzhou, central China's Henan Province, Sept. 1, 2019. A total of 300 pieces of artworks were displayed on the exhibition. (Xinhua/Li An)