Tibetan Buddhists debate on Buddhism scriptures during a Buddhist ceremony at the Sera Monastery in the suburb of Lhasa, capital of southwest China's Tibet Autonomous Region, March 4, 2009. The seven-day annual religious ceremony, starting on the 8th day of the first month in the Tibetan calendar, is held to pray for peace and safety, as Tibetan Buddhists debate on Buddhism scriptures and Buddhism followers worship Buddha and give alms. (Xinhua/Purbu Zhaxi)

Tibetan Buddhists attend a Buddhist ceremony at the Zhaibung Monastery in the suburb of Lhasa, capital of southwest China's Tibet Autonomous Region, March 4, 2009.(Xinhua/Purbu Zhaxi)

Buddhism followers watch a Buddhist ceremony at the Zhaibung Monastery in the suburb of Lhasa, capital of southwest China's Tibet Autonomous Region, March 4, 2009.(Xinhua/Purbu Zhaxi)

Tibetan Buddhists attend a Buddhist ceremony at the Zhaibung Monastery in the suburb of Lhasa, capital of southwest China's Tibet Autonomous Region, March 4, 2009. (Xinhua/Purbu Zhaxi)

Buddhism followers give alms during a Buddhist ceremony at the Sera Monastery in the suburb of Lhasa, capital of southwest China's Tibet Autonomous Region, March 4, 2009.(Xinhua/Purbu Zhaxi)

Tibetan Buddhists donate tea at the Zhaibung Monastery in the suburb of Lhasa, capital of southwest China's Tibet Autonomous Region, March 4, 2009.(Xinhua/Purbu Zhaxi)

Tibetan Buddhists chant Buddhism scriptures during a Buddhist ceremony at the Sera Monastery in the suburb of Lhasa, capital of southwest China's Tibet Autonomous Region, March 4, 2009.(Xinhua/Purbu Zhaxi)