There are Xi Jiaotong University and Northwestern Polytechnical University 1 1 schools. Shaanxi 985 colleges and universities include xi Jiaotong University, Northwestern Polytechnical University and Northwest A&F University, with a total of three colleges and universities. Shaanxi 2 1 1 Universities include xi Jiaotong University, Northwestern Polytechnical University, Northwest A&F University, xidian university, Air Force Medical University, Shaanxi Normal University, Northwest University, Chang 'an University, and 8 other universities. Shaanxi Province is located in the hinterland of China and the middle reaches of the Yellow River. It is one of the important birthplaces of Chinese nation and China culture. Xi 'an is the capital with a total area of 205,800 square kilometers. There are 10 prefecture-level cities and several municipal districts, county-level cities and counties. Shaanxi's geographical position is very important, connecting the eastern and central regions as well as the southwest and northwest regions of China, and it is one of the transportation hubs. Longhai Railway, which runs through the central part, is the center of the Asian section of the "New Eurasian Continental Bridge" and the "gateway" to the northwest of China. Baoxi Railway and Xiyu Railway also run through the whole province, making Shaanxi's transportation network extend in all directions.