Students rehearse for Children's Day performance in a primary school in Xingtai City, north China's Hebei Province, May 27, 2019. (Xinhua/Zhang Chi)

Students play games celebrating the upcoming Children's Day at a primary school in Huzhou City, east China's Zhejiang Province, May 27, 2019. (Xinhua/Xia Pengfei)

Children and their parents rehearse for Children's Day performance at a kindergarten in Zhangjiajie City, central China's Hunan Province, May 27, 2019. (Xinhua/Wu Yongbing)

Children rehearse for Children's Day performance with their teachers at a kindergarten in Zhangjiajie City, central China's Hunan Province, May 27, 2019. (Xinhua/Wu Yongbing)