A visitor views an artwork in an exhibition featuring digital art during China International Big Data Industry Expo 2019 in Guiyang, capital of southwest China's Guizhou Province, May 27, 2019. The exhibition is a part of four-day China International Big Data Industry Expo 2019 that kicked off on May 26, 2019. (Xinhua/Yang Wenbin)

Visitors view the exhibition featuring digital art during China International Big Data Industry Expo 2019 in Guiyang, capital of southwest China's Guizhou Province, May 27, 2019. The exhibition is a part of four-day China International Big Data Industry Expo 2019 that kicked off on May 26, 2019. (Xinhua/Yang Wenbin)

Visitors view the exhibition featuring digital art during China International Big Data Industry Expo 2019 in Guiyang, capital of southwest China's Guizhou Province, May 27, 2019. The exhibition is a part of four-day China International Big Data Industry Expo 2019 that kicked off on May 26, 2019. (Xinhua/Yang Wenbin)

Visitors view the exhibition featuring digital art during China International Big Data Industry Expo 2019 in Guiyang, capital of southwest China's Guizhou Province, May 27, 2019. The exhibition is a part of four-day China International Big Data Industry Expo 2019 that kicked off on May 26, 2019. (Xinhua/Yang Wenbin)

A visitor views an artwork in an exhibition featuring digital art during China International Big Data Industry Expo 2019 in Guiyang, capital of southwest China's Guizhou Province, May 27, 2019. The exhibition is a part of four-day China International Big Data Industry Expo 2019 that kicked off on May 26, 2019. (Xinhua/Yang Wenbin)

Visitors view the exhibition featuring digital art during China International Big Data Industry Expo 2019 in Guiyang, capital of southwest China's Guizhou Province, May 27, 2019. The exhibition is a part of four-day China International Big Data Industry Expo 2019 that kicked off on May 26, 2019. (Xinhua/Yang Wenbin)