The history of the ring shield?

General situation of villages and towns: Huandun Town, a star town near Hailing Lake, was founded in the Spring and Autumn Period and the Warring States Period. It is a civilized stone city with thousands of years of cultural history. My town is connected to Yimeng Mountain in the north and the largest artificial reservoir in Jiangsu Province in the south? Hailing Lake (Liang Shi River), 50 kilometers away from Linyi Market and only 20 kilometers away from Tongshan Expressway, has convenient transportation, and is a famous border town in two provinces (rusu) and three counties (Ganyu, Donghai and Linshu). The town covers an area of 79 square kilometers, with 16 administrative villages and a population of 40,000. My town combines the construction of new countryside and vigorously develops ecological agriculture, ecological gardens and ecological farms. Our town adheres to market-oriented and benefit-centered, constantly optimizes the agricultural industrial structure and gradually realizes the industrialization of characteristic agriculture. The town's asparagus planting area is 1.2 million mu, which is the largest asparagus production base in northern Jiangsu. The town has a blackberry planting area of more than 20,000 mu, which is the largest blackberry planting base in northern Jiangsu. The town has excavated 5,000 mu of freshwater fish ponds and developed 60,000 cages, with more than 20 series and more than 30 species of freshwater fish. It is the largest freshwater fish breeding base in southern Jiangsu. Our town took the lead in setting up Lianyungang Asparagus Industry Association, Ganyu Freshwater Fish Breeding Association, Ganyu Blackberry Industry Association, Ganyu Huandun Town Animal Husbandry Industry Association and Ganyu Huandun Town Fur Animal Industry Association in the county and even the whole city, which will play an important role in strengthening cooperation and competition, integrating resource advantages, upgrading industrial level, increasing farmers' income and promoting civilization construction.