Transport helicopters fly over the Potala Palace

A cluster of transport helicopters attached to an army aviation brigade under the PLA Xizang Military Command line up to take off in tactical formation during a recent round-the-clock flight training exercise at the elevation of 3,700 meters in southwest China's Xizang Autonomous Region. ( by Pu Jin, Lu Jian, Wu Guolong and Bai Qi)

Source:China Military Online