Constraint: 1. Inland cities, the temperature is not good, it is too hot in summer, 2. In the early days of liberation, the industry was single, mainly military industry, and the pattern was limited ~ 3. There are many old buildings in Xi 'an urban area, and the transformation of the new urban area will destroy the sense of historical vicissitudes, resulting in many enterprises unable to move in ~ Advantages: Xi 'an High-tech Industrial Development Zone is one of the only three national high-tech development zones (Zhongguancun in Beijing, Suzhou High-tech Zone and Xi 'an High-tech Industrial Development Zone). The history and culture of Xi are unmatched by any city in China. (More than 5,000 years history-Huangdi) The number of military enterprises and research institutes in Xi 'an ranks third in the country, second only to Beijing and Shanghai. 80% of parts and components in shenzhou spaceship are made by Xi 'an, and half of weapons are made by Xi 'an. It is the only satellite measurement and control center in China and the only aircraft flight test institute in Xi 'an. There are more than 20 tombs/kloc-0 around Xi' an, the largest musical fountain in Asia-the largest ocean park on the west side of the North Square of Big Wild Goose Pagoda-Xi' an Ocean World-the largest wildlife park on the west side of the aquarium "Xi' anqin". There are 32 public universities and 29 private universities in xi, with more than 20,000 students1.2000, including the famous Xi Jiaotong University, Northwestern Polytechnical University, Shaanxi Normal University, Northwest A&F University, one of the six key normal universities directly under the Ministry of Education, etc. There are 43 academicians of the two academies in Shaanxi Province, including 42 in Xi 'an, ranking fourth in the country. (Beijing 1, Shanghai 2, Jiangsu 3)Xi 'an has 1 1 military academies, including the Fourth Military Medical University, the Second Artillery Engineering University, the Air Force Engineering University, the Armed Police Command College and the Armed Police Communication College. ! ! Huangdi, Qin Shihuang, Liu Bang, Xiang Yu, Emperor Wu of the Han Dynasty, Wei Qing, Huo Qubing, Zhang Qian, Sima Qian, Ban Chao, Emperor Taizong, Yang Guifei, Wang Zhaojun, Wu Zetian, Li Bai, Du Fu, Bai Juyi and Sun Simiao. Are witnesses of Xi history and Chinese civilization! ! ! ! The comprehensive scientific and technological strength of universities ranks third (Xi 'an has 44 universities with 800,000 students, including 5 private universities10.3 million students).