Children take part in a performance to celebrate the International Children's Day at Houzaimen primary school in Xincheng District of Xi'an, northwest China's Shaanxi Province, June 1, 2022. (Xinhua/Zhang Bowen)

Students play games to celebrate the International Children's Day at a primary school in Hohhot, north China's Inner Mongolia Autonomous Region, June 1, 2022. (Xinhua/Liu Lei)

Children take part in an outdoor game to celebrate the International Children's Day at a kindergarten in Xigu District of Lanzhou, northwest China's Gansu Province, June 1, 2022. (Xinhua/Chen Bin)

Children take part in a performance to celebrate the International Children's Day at Houzaimen primary school in Xincheng District of Xi'an, northwest China's Shaanxi Province, June 1, 2022. (Xinhua/Zhang Bowen)

Children read books at a reading club of Binhulu primary school in Nanning, south China's Guangxi Zhuang Autonomous Region on June 1, 2022, the International Children's Day. (Xinhua/Cao Yiming)

Children take part in a performance to celebrate the International Children's Day at Houzaimen primary school in Xincheng District of Xi'an, northwest China's Shaanxi Province, June 1, 2022. (Xinhua/Zhang Bowen)

Children take part in a performance to celebrate the International Children's Day at Houzaimen primary school in Xincheng District of Xi'an, northwest China's Shaanxi Province, June 1, 2022. (Xinhua/Zhang Bowen)

Children read books at a reading club of Binhulu primary school in Nanning, south China's Guangxi Zhuang Autonomous Region on June 1, 2022, the International Children's Day. (Xinhua/Cao Yiming)

Children take part in an outdoor game to celebrate the International Children's Day at a kindergarten in Xigu District of Lanzhou, northwest China's Gansu Province, June 1, 2022. (Xinhua/Chen Bin)

Students dance to celebrate the International Children's Day at a primary school in Hohhot, north China's Inner Mongolia Autonomous Region, June 1, 2022. (Xinhua/Liu Lei)