Students perform traditional Chinese opera during an event in celebration of the upcoming International Children's Day in Yiyuan County of Zibo City, east China's Shandong Province, May 31, 2019. (Photos: Xinhua)

Students of Chengguan Primary School perform Peking Opera during an event in celebration of the upcoming International Children's Day in Wanrong County of Yuncheng City, north China's Shanxi Province, May 31, 2019.

A child of a kindergarten performs original Chinese opera during an event in celebration of the upcoming International Children's Day in Changxing County of Huzhou City, east China's Zhejiang Province, May 30, 2019.

Students perform Peking Opera during an event in celebration of the upcoming International Children's Day in Qinghuangdao City, north China's Hebei Province, May 31, 2019.

A young Wu Opera actress interacts with students during an event in celebration of the upcoming International Children's Day in Jiande City, east China's Zhejiang Province, May 30, 2019.

Students perform traditional Chinese opera during an event in celebration of the upcoming International Children's Day in Yichang City, central China's Hubei Province, May 31, 2019.

Children wait to perform during an event in celebration of the upcoming International Children's Day in Xuanen County of Enshi Tujia and Miao Autonomous Prefecture, central China's Hubei Province, May 30, 2019.