![](http://www.ecns.cn/hd/2020/06/01/213ed999147f40a8bdb4111c610e382b.jpg)
Children at Houbiaoying Primary School in Nanjing, capital of east China's Jiangsu Province, wear DIY "face masks" painted with the theme of fighting COVID-19, June 1, 2020. The school held a variety of themed activities to celebrate the International Children's Day on Monday. (Photo: China News Service/Yang Bo)
![](http://www.ecns.cn/hd/2020/06/01/fa950f77a3e042999abbd9fabf0997ed.jpg)
Children at Houbiaoying Primary School in Nanjing, capital of east China's Jiangsu Province, wear DIY "face masks" painted with the theme of fighting COVID-19, June 1, 2020. The school held a variety of themed activities to celebrate the International Children's Day on Monday. (Photo: China News Service/Yang Bo)
![](http://www.ecns.cn/hd/2020/06/01/d4dc43dbb92c448ea15ff3bbd1e5811c.jpg)
Children at Houbiaoying Primary School in Nanjing, capital of east China's Jiangsu Province, wear DIY "face masks" painted with the theme of fighting COVID-19, June 1, 2020. The school held a variety of themed activities to celebrate the International Children's Day on Monday. (Photo: China News Service/Yang Bo)
![](http://www.ecns.cn/hd/2020/06/01/4d062d5df3b843ad819c4f30be602001.jpg)
Children at Houbiaoying Primary School in Nanjing, capital of east China's Jiangsu Province, wear DIY "face masks" painted with the theme of fighting COVID-19, June 1, 2020. The school held a variety of themed activities to celebrate the International Children's Day on Monday. (Photo: China News Service/Yang Bo)
![](http://www.ecns.cn/hd/2020/06/01/b24fc47df03549fc82093c0681a36770.jpg)
Children at Houbiaoying Primary School in Nanjing, capital of east China's Jiangsu Province, wear DIY "face masks" painted with the theme of fighting COVID-19, June 1, 2020. The school held a variety of themed activities to celebrate the International Children's Day on Monday. (Photo: China News Service/Yang Bo)