A KJ-500 AEW aircraft attached to an aviation division of the navy under the PLA Eastern Theater Command sits on the flightline and receives inspections prior to a recent night patrol mission.

A main battle tank (MBT) attached to an armored regiment under the PLA Xinjiang Military Command rumbles through a mound of dust to a designated training area during a maneuver operation in northwest China’s Xinjiang Uyghur Autonomous Region on March 30, 2020.

Pilots sitting in the cockpit of their fighter jet are well prepared and await approvals to take off during an aerial night combat training exercise at a military airfield in north China on March 13, 2020.

Pilots sitting in the cockpit of a WZ-10 attack helicopter get ready for a flight training exercise in early March, 2020. They are assigned to an army aviation brigade under the PLA Western Theater Command.

Artillerymen assigned to a brigade under the PLA 76th Group Army stand in formation, listening to the instructor's summary after the live-fire operation on March 21, 2020.

Soldiers assigned to a brigade under the PLA Rocket Force erect a ballistic missile system into position on a missile launching truck during a realistic training exercise on March 12, 2020.

Artillerymen assigned to a brigade under the PLA Rocket Force operate a crane to hoist and load a missile at night during a recent assault training exercise in northwest China’s Gobi desert.

Armored vehicles mounted with Tor anti-aircraft missile systems attached to a brigade under the PLA 72nd Group Army conduct an emergency maneuver operation in unknown areas on March 21, 2020.

Main battle tanks (MBTs) attached to a combined arms brigade under the PLA 78th Group Army spit fires at mock targets in a night live-fire operation during a training exercise from March 17 to 23, 2020.

An H-6 bomber attached to an aviation brigade of the air force under the PLA Eastern Theater Command takes off from the runway for a round-the-clock flight training exercise on March 15, 2020.

J-10 fighter jets attached to an aviation brigade of the air force under the PLA Southern Theater Command taxi out of the aircraft shelters successively onto the flightline for a live-fire flight training exercise on March 19, 2020.

Three WZ-10 attack helicopters attached to an army aviation brigade under the PLA 72nd Group Army fly in tactical formation at an extremely-low altitude for concealment during a flight training exercise on March 11, 2020.

A J-11 fighter jet attached to an aviation brigade of the air force under the PLA Eastern Theater Command soars into the air for a round-the-clock flight training exercise on March 20, 2020.

A main battle tank (MBT) attached to an armored regiment under the PLA Xinjiang Military Command rumbles through a mound of dust during a long-distance maneuver operation on March 19, 2020.

Multiple rocket launch systems attached to an artillery brigade under the PLA Xizang Military Command fire anti-aircraft rockets simultaneously during a live-fire operation at the elevation of 4,500 meters in Southwest China's Xizang Autonomous Region on March 11, 2020.

Scouts wearing ghillie suits engage the mock targets during a reconnaissance tactical training exercise deep in the jungle on March 12, 2020. They are assigned to a special operations brigade under the PLA 77th Group Army.

Armored vehicles attached to an air-defense detachment of a combined brigade under the PLA 78th Group Army rumble on a rugged mountain road during a driving skills training exercise on March 10, 2020.

The guided-missile frigate Xuchang (Hull 536) attached to a naval destroyer flotilla under the PLA Southern Theater Command fires chaff rounds from the decoy launching system during a 5-day maritime training exercise from March 9 to 13, 2020.

Ground crew members assigned to the PLA Air Force Xi'an Flight Academy rush to their positions as assembled fighter trainer aircraft sit abreast on the tarmac with each other prior to a night flight training course on March 12, 2020.

Beijing has reopened Xiaotangshan Hospital, which housed SARS patients in 2003, to receive international arrivals for further screening, quarantine, and treatment of mild cases of novel coronavirus disease (COVID-19).