Smog lingers 11 cities in N China's Hebei (4/4)

Smog shrouds Shijiazhuang, capital of north China's Hebei province, March 10, 2014. Smog hit 11 cities in the province and lingered for three days since March 8. The local environmental bureau has issued yellow alert for smog for three days in a row. (Xinhua/Mo Yu)