Tourists line for visiting the Potala Palace in Lhasa, southwest China's Tibet Autonomous Region, on April 21, 2009. Tibet expects to receive three million domestic and foreign tourists in 2009, according to the regional tourism administration. [Xinhua]

Tourists line for visiting the Potala Palace in Lhasa, southwest China's Tibet Autonomous Region, on April 21, 2009. [Xinhua]