Local residents do morning exercises at Dragon King Pool Park in downtown Lhasa on March 23, 2012. [Photo/Xinhua]

These days, local residents go out to take exercise with the temperature rising, trees turning green and the oxygen content increasing in Lhasa, capital of southwest China's Tibet Autonomous Region.

Thousands of local residents do morning exercises at Dragon King Pool Park in downtown Lhasa every day.

Local residents do morning exercises at Dragon King Pool Park in downtown Lhasa on March 23, 2012. [Photo/Xinhua]

Local residents do morning exercises at Dragon King Pool Park in downtown Lhasa on March 23, 2012. [Photo/Xinhua]