People visit the 2017 Mobile World Congress Americas (MWCA) in San Francisco, the United Stateson Sept. 12, 2017. 2017 Mobile World Congress Americas is held here from Sept. 12 to Sept. 14. (Xinhua/Wu Xiaoling)
Large number of birds rest at Sugan Lake in NW China’s Gansu
Amazing scenery of terraced fields in SW China’s Chongqing
Migratory birds seen in Hasuhai wetland in N China
In pics: botanic garden of Warsaw University Library
Aerial view of expressway, highway in central China's Hunan
Flower industry helps to improve development of SW China's county
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Large number of birds rest at Sugan Lake in NW China’s Gansu
Amazing scenery of terraced fields in SW China’s Chongqing
Migratory birds seen in Hasuhai wetland in N China
In pics: botanic garden of Warsaw University Library
Aerial view of expressway, highway in central China's Hunan
Flower industry helps to improve development of SW China's county