China's Zhejiang Province issues orange-coded alert for heavy fog (3)

Citizens do morning exercises amid heavy fog in Hangzhou, capital of east China's Zhejiang Province, Jan. 28, 2013. The provincial meteorological observatory has issued an orange-coded alert on Jan. 28 morning as foggy weather here cut visibility to less than 500 meters and worsened air pollution in many cities. (Xinhua/Huang Zongzhi)