Outdoor opera "Wencheng Princess" is performed in Lhasa, capital of southwest China's Tibet Autonomous Region, April 20, 2015. (Xinhua/Wang Shoubao)

Outdoor opera "Wencheng Princess" is performed in Lhasa, capital of southwest China's Tibet Autonomous Region, April 20, 2015. (Xinhua/Wang Shoubao)

Outdoor opera "Wencheng Princess" is performed in Lhasa, capital of southwest China's Tibet Autonomous Region, April 20, 2015. (Xinhua/Wang Shoubao)

Outdoor opera "Wencheng Princess" is performed in Lhasa, capital of southwest China's Tibet Autonomous Region, April 20, 2015. (Xinhua/Wang Shoubao)