
Tourists watch red-crowned cranes on the Nandagang wetland in Cangzhou, north China's Hebei Province, May 8, 2014. In recent years, local government carried out the ecology recovery work in the Nandagang wetland in Cangzhou. (Xinhua)

Tourists watch red-crowned cranes on the Nandagang wetland in Cangzhou, north China's Hebei Province, May 8, 2014. In recent years, local government carried out the ecology recovery work in the Nandagang wetland in Cangzhou. (Xinhua)