A traffic policewoman wears a mask while directing traffic in Jinan, the capital city of East China's Shandong province, on Jan 30, 2013. Most parts of China have been shrouded by smog and haze in recent days and Jinan is no exception. In order to protect their health, the local police have donned the masks on hazy days. [Photo by Zheng Tao/Asianewsphoto]