Donghai county. According to the announcement of Donghai County Education Bureau, Donghai County has four junior high schools, namely Donghai Experimental Middle School, Xishuanghu Middle School, Peiren Middle School and Jinqiao Middle School, and three senior high schools, namely Jiangsu Sixing High School, Donghai No.2 Middle School and Donghai No.4 Middle School, which are more than other junior high schools in Jiangsu Province. So Donghai County has the largest number of junior high schools in Lianyungang. Donghai County belongs to Lianyungang City, Jiangsu Province, located in the northeast of Jiangsu Province, with a total area of 2040.9 square kilometers.