Volunteers free various kinds of fish into Xiazhu lake, a state-level wet-land park in Deqing county, Zhejiang province on March 21, 2010, to mark the 18th World Water Day which falls on March 22. People in different regions of the nation have organized a series of activities to promote water quality.[Xinhua]
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![Volunteers free various kinds of fish into Xiazhu lake, a state-level wet-land park in Deqing county, Zhejiang province on March 21, 2010, to mark the 18th World Water Day which falls on March 22. People in different regions of the nation have organized a series of activities to promote water quality.[Xinhua]](http://images.china.cn/attachement/jpg/site1007/20100323/00114320f5750d1259ab3b.jpg "Volunteers free various kinds of fish into Xiazhu lake, a state-level wet-land park in Deqing county, Zhejiang province on March 21, 2010, to mark the 18th World Water Day which falls on March 22. People in different regions of the nation have organized a series of activities to promote water quality.[Xinhua]")
