Two traffic policewomen with masks work in Jinan, capital of east China's Shandong Province, January 30, 2013. The local traffic policemen used masks to protect their health in hazy days.(Xinhua/Xu Suhui)
A traffic policewoman with a mask directs the traffic in Jinan, capital of east China's Shandong Province, January 30, 2013. The local traffic policemen used masks to protect their health in hazy days.(Xinhua/Xu Suhui)
A traffic policewoman with a mask directs the traffic in Jinan, capital of east China's Shandong Province, January 30, 2013. The local traffic policemen used masks to protect their health in hazy days.(Xinhua/Xu Suhui)