An unmanned military drone takes off near Helan Mountain in Lanzhou, northwest China's Gansu Province, on April 16. The drone recently completed its first digital cartography mission, capturing aerial photographs for more than five consecutive hours. Conducted by the Lanzhou Military Area Command of the People's Liberation Army (PLA), the mission marked the first time for such type of drone to be used for military mapping purposes in China, said military sources on Wednesday (XINHUA) |