Source: Xinhua| 2017-09-23 07:11:11|Editor: Yang Yi

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Chinese and Pakistani fighters participate in a joint drill in China, Sept. 20, 2017. The Chinese and Pakistani air forces have cooperated in planning and implementing strategies, as well as learning operational concepts and tactics from each other through sitting in the same fighter during the ongoing joint drills named "Shaheen VI" from Sept. 7 to 27. (Xinhua/Qin Dijun)