On October 6th, Donglin Town, Wuxing District put 7 million ecological bream fry into the waters near No. 7 Drainage and Irrigation Pumping Station, Xibeiyang and other rivers. By using the restoration function of fish to the water environment ecology this could inhibit algae and eutrophication and improve the river water quality. For five consecutive years, more than 10 million fish fry have been released in total.