Say no to PM2.5! (4/7)
2013-12-11 10:00
Ecns.cn
Web Editor:Gu Liping
Primary school students in Nanjing of Jiangsu province wear masks under a clear sky on Dec 10, 2013. A primary school in Nanjing held an activity to call for low-carbon lifestyle for clean air. The city had been smothered by heavy smog for several consecutive days. [Photo: China News Service / Yang Bo]
