
Two fighter jets take off for a combat sortie during the "Red Sword-2018" systemic confrontation training exercise held by the Chinese PLA Air Force in northwestern China's deep desert in early June, 2018. The "Red Sword-2018", involving various troops from the Air Force, such as aviation, ground-to-air missile, radar, electronic countermeasure troops, aims to beef up the Air Force's systematic combat capabilities. (Photo/eng.chinamil.com.cn)

Three fighter jets conduct a fly-by over the desert during the "Red Sword-2018" systemic confrontation training exercise held by the Chinese PLA Air Force in northwestern China's deep desert in early June, 2018. The "Red Sword-2018", involving various troops from the Air Force, such as aviation, ground-to-air missile, radar, electronic countermeasure troops, aims to beef up the Air Force's systematic combat capabilities. (Photo/eng.chinamil.com.cn)

A fighter jet approaches a tanker aircraft for refuel during the "Red Sword-2018" systemic confrontation training exercise held by the Chinese PLA Air Force in northwestern China's deep desert in early June, 2018. The "Red Sword-2018", involving various troops from the Air Force, such as aviation, ground-to-air missile, radar, electronic countermeasure troops, aims to beef up the Air Force's systematic combat capabilities. (Photo/eng.chinamil.com.cn)

An airborne early warning (AEW) aircraft taxies on the runway before takeoff for a sortie during the "Red Sword-2018" systemic confrontation training exercise held by the Chinese PLA Air Force in northwestern China's deep desert in early June, 2018. The "Red Sword-2018", involving various troops from the Air Force, such as aviation, ground-to-air missile, radar, electronic countermeasure troops, aims to beef up the Air Force's systematic combat capabilities. (Photo/eng.chinamil.com.cn)

An airborne early warning (AEW) aircraft takes off at night for a sortie during the "Red Sword-2018" systemic confrontation training exercise held by the Chinese PLA Air Force in northwestern China's deep desert in early June, 2018. The "Red Sword-2018", involving various troops from the Air Force, such as aviation, ground-to-air missile, radar, electronic countermeasure troops, aims to beef up the Air Force's systematic combat capabilities. (Photo/eng.chinamil.com.cn)

Two fighter jets taxi on the runway in formation before takeoff for a combat sortie during the "Red Sword-2018" systemic confrontation training exercise held by the Chinese PLA Air Force in northwestern China's deep desert in early June, 2018. The "Red Sword-2018", involving various troops from the Air Force, such as aviation, ground-to-air missile, radar, electronic countermeasure troops, aims to beef up the Air Force's systematic combat capabilities. (Photo/eng.chinamil.com.cn)

A J-10 fighter jet takes off for a combat sortie during the "Red Sword-2018" systemic confrontation training exercise held by the Chinese PLA Air Force in northwestern China's deep desert in early June, 2018. The "Red Sword-2018", involving various troops from the Air Force, such as aviation, ground-to-air missile, radar, electronic countermeasure troops, aims to beef up the Air Force's systematic combat capabilities. (Photo/eng.chinamil.com.cn)

Soldiers set up a vehicle-mounted radar system during the "Red Sword-2018" systemic confrontation training exercise held by the Chinese PLA Air Force in northwestern China's deep desert in early June, 2018. The "Red Sword-2018", involving various troops from the Air Force, such as aviation, ground-to-air missile, radar, electronic countermeasure troops, aims to beef up the Air Force's systematic combat capabilities. (Photo/eng.chinamil.com.cn)