A Chinese locomotive passes a Kazak tank car at Alataw Pass railway station on the China-Kazakhstan border, northwest China's Xinjiang Uygur Autonomous Region, June 10, 2006. As a major land port in west China, Alataw Pass has been playing an important role in the trade between China, Kazakhstan and other SCO (Shanghai Cooperation Organization) member states. The volume of goods transported at the land port set a historical record of over 11 million tons in 2005. Moreover, a 1,000-km oil pipeline, connecting Kazakhstan's Atasu and Alataw Pass, has been carrying oil to China since last December. (Xinhua Photo)

Kazak tank cars drawn by Chinese locomotives run at Alataw Pass railway station on the China-Kazakhstan border, northwest China's Xinjiang Uygur Autonomous Region, June 10, 2006. (Xinhua Photo)

A worker fills a tank car at Alataw Pass railway station on the China-Kazakhstan border, northwest China's Xinjiang Uygur Autonomous Region, June 11, 2006. (Xinhua Photo)

Two passengers look out from a train from China's Urumqi to Kazakhstan's Almaty at Alataw Pass railway station on the China-Kazakhstan border, northwest China's Xinjiang Uygur Autonomous Region, June 11, 2006. (Xinhua Photo)

The photo taken on June 10, 2006 shows the Alataw Pass railway station on the China-Kazakhstan border, northwest China's Xinjiang Uygur Autonomous Region, June 10, 2006. (Xinhua Photo)