Three jets perform at an air show during the "aviadarts" competition of the International Army Games 2017 held in Changchun, Northeast China's Jilin province, Aug 10, 2017. The PLA Air Force won four gold medals in the competition. The International Army Games 2017, which ran from July 29 to Aug 12, consists of 28 competitions held in Russia, China, Azerbaijan, Belarus and Kazakhstan. [Photo by Yuan Jigang/Provided to chinadaily.com.cn]