The exploitation to Western Regions of Western Han Dynesty Government

Zhang Qian was sent on a diplomatic mission to Western Regions by Western Han Dynesty,through which Western Han Dynesty government knew the customs,georgraphy and products of Western Regions,it unclosed the traffic between China and Western countries.Western Han Dynesty government assarted fields in Western Regions and founded district government fo confrol Western Regions,which assured the communicafion befween China and Western countries and the trade of merchants,it established the base of economy and culture exchanges and bringing Xinjiang into the territory of China.However,it resulted in the destruction of ecological environment of Western Regions.