Xiashan District, full name: Xiashan Ecological Economic Development Zone, was officially established and put into operation on January 1, 2008. It covers an area of ??491 square kilometers, governs 4 streets, 277 administrative villages, and 230,000 people. In February 2011, it was created as the "National Sustainable Development Experimental Zone"; in December 2012, it was created as the first "National Organic Product Certification Demonstration Zone" in Shandong Province; the core area of ??the national Weishui Cultural Ecological Protection Experimental Zone ; National Wetland Park Pilot; National Water Conservancy Scenic Spot, and successfully passed the assessment and acceptance of the National Export Food and Agricultural Products Quality and Safety Demonstration Zone. Among them, the National Organic Product Certification Demonstration Zone and the National Export Food and Agricultural Product Quality and Safety Demonstration Zone have become the only units in the province and even in Jiangbei's "two districts" to create the first. Xiashan District is the first development zone named after ecological economy in the country. It has the largest reservoir in Shandong Province - Xiashan Reservoir, with a forest coverage rate of 45% and a negative oxygen ion concentration of more than 3,000 per cubic centimeter. It is a veritable " "Natural Oxygen Bar" is known as the "Green Lung" of Shandong Peninsula. At present, the district has built 32 organic agricultural parks with a total area of ??245,000 acres; 20 registered organic product trademarks and more than 120 certified organic products; 226,000 acres of certified organic fish area, the largest in Jiangbei, and the organic industry has become the largest in Xiashan Beautiful business card.