Local residents fish on the Hanjiang River which is covered with green duckweed in Wuhan, Central China's Hubei province on June 1, 2013. These bits of flotsam formed a "green belt" after several rainfalls gathered the duckweed together, which then grew in lakes and small rivers upstream, and then flowed down to the Hanjiang River. [Photo by Li Ziyun/Asianewsphoto]
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