A worker sprays bio-pesticide in a vegetable field in Jiangxi province, March 21, 2012. Unlike chemical pesticide, the bio-pesticide is ecological friendly. [Photo/Xinhua]

A fisherman takes a look at a fish seed before releasing it back into the sea in Zhoushan Islands, East China's Zhejiang province. In order to restore fishing resources, the province has been releasing fish seeds into the sea. [Photo/Xinhua]