四川、贵州、云南、西藏四省区是我国自然条件复杂、经济发展落后、地区差异大的一个地区 ,在经济开发上又是最有潜力的地区。中央总揽全局、面向新世纪作出了实施西部大开发的大战略、大决策 ,对于加快西部地区包括川贵云藏四省区的发展与腾飞提供了千载难逢的历史机遇。四省 The four provinces in Sichuan, Guizhou, Yunnan and Tibet are one of the most complex areas in China with complicated natural conditions, backward economic development and large differences in areas. They are also the most promising areas in economic development. The central authorities have taken overall control of the overall situation and made grand strategy and major decisions for the implementation of western development in the new century, which have provided a golden opportunity for accelerating the development and take-off of the four provinces and autonomous regions including the Sichuan and Guizhou provinces. Four provinces