Xi'an, ancient said that “Chang An”, is world famous world one of four big civilized ancient capitals, comes first in of Chinese ancient capital, is in the Chinese history the founding a capital time is longest, the founding a capital dynasty to be most, the influence biggest capital city, is Chinese nation's cradle, the Chinese civilization birthplace, Chinese culture representative. Xi'an, unique ancient and modern fusion perfect city. Now Xi'an is the People's Republic of China Shanxi Province's provincial capital, Chinese one of seven wide range key cities, Asian knowledge technological innovation center, new Europe and Asia continental bridge China section with Huanghe River valley biggest key city, Chinese big airplane's manufacture base, Chinese mid-west area most greatly most important scientific research, higher education, defense-related science and technology industry and high technology and new technology Industrial base.