Some migratory birds rest in the Lhasa River in southwest China's Tibet Autonomous Region, Nov. 27, 2008. The Lhasa River, mother river of Lhasa City, originates in the Milha Mountains and flows through Maizhokunggar County, Dagze County, Lhasa City, and then joins the Yarlung Zangbo River. (Xinhua Photo)

Some migratory birds rest in the Lhasa River in southwest China's Tibet Autonomous Region, Nov. 27, 2008. (Xinhua Photo)

Some migratory birds rest in the Lhasa River in southwest China's Tibet Autonomous Region, Nov. 27, 2008. (Xinhua Photo)

Photo taken on Nov. 27, 2008 shows the scenery of the Lhasa River in southwest China's Tibet Autonomous Region. (Xinhua Photo)

Some migratory birds rest in the Lhasa River in southwest China's Tibet Autonomous Region, Nov. 27, 2008.

The Lhasa River, mother river of Lhasa City, originates in the Milha Mountains and flows through Maizhokunggar County, Dagze County, Lhasa City, and then joins the Yarlung Zangbo River.