Photo shows the beautiful scenery of Zhangye National Wetland Park in Zhangye City, Gansu Province. The wetland is composed of lakes, moors and reed beds covering 33,000 hectares in its core area. It's the largest oasis in China's gobi desert and an important stopover site for many species of migratory birds from Siberia to Central and South Asia. [China.org.cn/Photo by Wang Jiang]