Dancers perform during a party marks the 50th anniversary of the Tibetan Autonomous Region Song and Dance Troupe in Lhasa, capital of west China's Tibetan Autonomous Region, Dec. 28, 2008. (Xinhua Photo)
A singer performs during a party marks the 50th anniversary of the Tibetan Autonomous Region Song and Dance Troupe in Lhasa, capital of west China's Tibetan Autonomous Region, Dec. 28, 2008. (Xinhua Photo)
Dancers perform during a party marks the 50th anniversary of the Tibetan Autonomous Region Song and Dance Troupe in Lhasa, capital of west China's Tibetan Autonomous Region, Dec. 28, 2008. (Xinhua Photo)
Dancers perform during a party marks the 50th anniversary of the Tibetan Autonomous Region Song and Dance Troupe in Lhasa, capital of west China's Tibetan Autonomous Region, Dec. 28, 2008. (Xinhua Photo)
Dancers perform during a party marks the 50th anniversary of the Tibetan Autonomous Region Song and Dance Troupe in Lhasa, capital of west China's Tibetan Autonomous Region, Dec. 28, 2008.(Xinhua Photo)
Dancers perform during a party marks the 50th anniversary of the Tibetan Autonomous Region Song and Dance Troupe in Lhasa, capital of west China's Tibetan Autonomous Region, Dec. 28, 2008.