A J-11B fighter jet attached to an aviation brigade of the South China Sea Fleet under the PLA Navy takes off for a sortie during a live-fire flight training exercise near the South China Sea on September 19, 2018.
The file photo shows a J-20 stealth fighter jet attached to the Chinese PLA Air Force flies through the clouds overhead during a flight training exercise.
An HQ-7 anti-aircraft missile system attached to an air-defense brigade under the PLA 78th Group Army fires missile at mock aerial target during a live-fire training exercise near the Bohai Bay on September 13, 2018.
Artillerymen operate a PCL-09 122mm truck-mounted self-propelled howitzer system to fire at mock targets during a recent live-fire field training exercise in southwest China's Qinghai-Xizang Plateau.
China, Russia and Mongolia conclude this week's "Vostok-2018" strategic drills with a military parade on Thursday at the Tsugol training range in Russia's Trans-Baikal region on the morning of September 13, 2018.
A Type-81 self-propelled 122 mm multiple rocket launcher attached to an artillery regiment under the PLA Xinjiang Military Command fires at mock targets during a recent field live-fire training exercise in northwest China's Gobi Desert.
A J-10 fighter jet attached to the air force under the PLA Southern Theater Command takes off for a combat sortie during a flight training exercise in southern China on Sept. 3, 2018.
WZ-10 attack helicopters attached to an army aviation brigade under the PLA 73rd Group Army lift off in formation for a flight training exercise on September 13, 2018.
The Explosive Ordnance Disposal (EOD) soldiers assigned to a border defense brigade of the army under the PLA Southern Theater Command walk along a steep hillside to search landmines and explosives with hand-held mine detectors during a mine sweeping training exercise at a minefield along the China-Vietnam border in Malipo County of southwest China's Yunnan Province in late August 2018.
Self-propelled howitzer systems attached to a combined brigade under the PLA 79th Group Army fire at mock targets during a round-the-clock live-fire training exercise on September 11, 2018