Children do handwork during an activity to greet the upcoming International Children's Day at Longshan Kindergarten in Changxing County of Huzhou City, east China's Zhejiang Province, May 29, 2019. (Xinhua/Tan Yunfeng)

Children show their handmade clothes during an activity to greet the upcoming International Children's Day at Longshan Kindergarten in Changxing County of Huzhou City, east China's Zhejiang Province, May 29, 2019. (Xinhua/Tan Yunfeng)

Children perform during an activity in celebration of the upcoming International Children's Day at a kindergarten in Yantai City, east China's Shandong Province, May 29, 2019. (Xinhua/Tang Ke)

Students interact with each other during the break of a Peking Opera show in celebration of the upcoming International Children's Day at a primary school in Shijiazhuang City, north China's Hebei Province, May 29, 2019. (Xinhua/Zhang Xiaofeng)

Students play Double Dutch, a rope skipping game, in an event to greet the upcoming International Children's Day at a primary school in Rugao, east China's Jiangsu Province, May 29, 2019. (Xinhua/Xu Peiqin)

Children participate in a competition in celebration of the upcoming International Children's Day at Chunhui Kindergarten in Xianju County of Taizhou City, east China's Zhejiang Province, May 29, 2019. (Xinhua/Wang Huabin)

Children play with toy carts in a competition in celebration of the upcoming International Children's Day at Yangguang Kindergarten in Zunhua City, north China's Hebei Province, May 29, 2019. (Xinhua/Liu Mancang)

Students show their cooking skills in an event to greet the upcoming International Children's Day at a primary school in Rugao, east China's Jiangsu Province, May 29, 2019. (Xinhua/Xu Peiqin)

Children play with a rainbow umbrella in celebration of the upcoming International Children's Day at Yangguang Kindergarten in Zunhua City, north China's Hebei Province, May 29, 2019. (Xinhua/Liu Mancang)

Children perform with basketballs in celebration of the upcoming International Children's Day at a kindergarten in Bijie City, southwest China's Guizhou Province, May 29, 2019. (Xinhua/Wang Chunliang)

A florist (2nd L) teaches students flower arrangement skills in celebration of the upcoming International Children's Day at a primary school in Zaozhuang City, east China's Shandong Province, May 29, 2019. (Xinhua/Sun Zhongzhe)

Students perform dance in celebration of the upcoming International Children's Day at a school of Xinhua District in Shijiazhuang City, north China's Hebei Province, May 29, 2019. (Xinhua/Liang Zidong)