There are the following famous schools in Liaoning Province: Northeast Yucai Middle School, Liaoning Experimental Middle School, Dalian No.24 Middle School, Dalian Yu Ming Senior Middle School, Dalian No.102 Middle School, Dalian No.103 Middle School, Dalian No.1 Middle School and high school attached to northeast normal university. The Alliance of Famous Schools in Liaoning Province is a voluntary cooperative body composed of a group of famous schools, aiming at promoting the sharing of educational resources and academic exchanges between schools, helping each other and improving the quality and influence of education. These schools have a high reputation and advantages in their respective professional fields. For example, Yucai Middle School in Northeast China has strong strength in mathematics, physics and other disciplines; Liaoning experimental middle school enjoys a high reputation in English, chemistry and other fields. The role of the alliance is mainly reflected in the following aspects: * * Enjoy educational resources and improve the quality of education; Improve teachers' education level through regular academic exchange activities; Cultivate students' sense of teamwork and competition by participating in competitions and other activities; By helping each other, we can promote the common development of alliance members. Liaoning, named after the meaning of "the Liaohe River Basin is always peaceful", is located in the core of the Bohai Rim and Northeast Asia economic circle, and is the only coastal and border province in northeast China, with a land area of148,700 square kilometers, a sea area of 150 square kilometers and a total length of 2290 kilometers of mainland coastline. There are 14 prefecture-level cities (including sub-provincial cities of Shenyang and Dalian) and Shenfu Demonstration Zone, and 100 county (city) districts, including 16 county-level cities and 25 counties (including Xiuyan Manchu Autonomous County, Xinbin Manchu Autonomous County, Qingyuan Manchu Autonomous County, Benxi Manchu Autonomous County, etc. There are 5 13 streets, 640 towns, 20 1 township, 46 17 communities, 1 15 1 administrative villages, and the permanent population is 41.