Since the 1990s , as part of the economic revival of interior China especially for the central and northwest regions , the city of Xi'an has re-emerged as an important cultural , industrial and educational center of the central-northwest region , with facilities for research and development , national security and China 's space exploration program .
It was named Xi'an because was in the western part of the Ming Empire .
It was named Xi'an because was in the western part of the Ming Empire .
让句子变得更简单: Since the 1990s , as part of the economic revival of interior China especially for the central and northwest regions , the city of Xi'an has re-emerged as an important cultural , industrial and educational center of the central-northwest region , with facilities for research and development , national security and China 's space exploration program . 输出: