从新疆的喀什西行,几十千米之后便进入哈萨克斯坦,哈萨克斯坦向南偏西,进入乌兹别克斯坦。从乌兹别克斯坦再向南偏西,是土库曼斯坦。哈萨克斯坦和土库曼斯坦濒临里海东岸,而里海盆地是世界上油气最富集的盆地之一。从新疆的喀什东行,约四千多千米之后,便可进入中原,然后就是长江三角洲或珠江三角洲,那里,是中国经济最 Kashgar from the westbound in Xinjiang, after tens of kilometers into Kazakhstan, south westward, into Uzbekistan. From Uzbekistan to the south west, is Turkmenistan. Kazakhstan and Turkmenistan are on the east coast of the Caspian Sea, and the Caspian Basin is one of the most oil and gas basins in the world. From the east bank of Kashgar in Xinjiang, about four thousand kilometers later, it can enter the Central Plains, and then the Yangtze River Delta or the Pearl River Delta, where it is China’s economy