Two J-10 fighter jets attached to an air force aviation brigade under the PLA Southern Theater Command take off in formation during a flight training exercise in southwest China on May 17, 2017. (Photo/81.cn)
Two J-10 fighter jets attached to an air force aviation brigade under the PLA Southern Theater Command take off in formation during a flight training exercise in southwest China on May 17, 2017. (Photo/81.cn)