Two Su-30 fighter jets attached to a naval aviation brigade under the PLA Eastern Theater Command soar into the sky in tactical formation to a designated airspace during a flight training mission on February 18, 2020.

A Type 96A MBT and an IFV attached to a combined brigade under the PLA 72nd Group Army rumble on the muddy ramp en route to a designated training area during a coordinated driving skills training exercise on February 19, 2020.

A J-11 fighter jet attached to an aviation brigade of the air force under the PLA Northern Theater Command flies through a mountainous region during a flight training exercise on February 17, 2020.

Totally 1200 military medics carrying medications arrive at Tianhe International Airport in Wuhan, Central China's Hubei province, on Feb 17, 2020.

A Y-8 aircraft for ASW patrol mission attached to a naval aviation regiment under the PLA Southern Theater Command performs touch-and-go maneuver on the runway during a real-combat flight training exercise on February 13, 2020.

Another group of military medics arrives at Tianhe International Airport in Wuhan, Central China's Hubei province, on Feb 17, 2020. An additional 1,200 military medics sent by the People's Liberation Army to help fight the novel coronavirus epidemic arrived in Wuhan on Monday.

Members of a special force team climb a steel ladder to the “hijacked ship” acted by the comprehensive supply ship Weishanhu during the armed rescue training of a real combat training exercise conducted by the 34th Chinese naval escort taskforce in eastern waters of the Gulf of Aden from February 9 to February 12, 2020.

A cluster of attack helicopters led by a Mi-171 transport helicopter attached to an army aviation brigade under the PLA 73th Group Army lift off successively from parking apron during a flight training exercise on February 11, 2020.

Two J-10 fighter jets attached to an aviation brigade of the air force under the PLA Southern Theater Command taxi down the flightline in close formation before takeoff for their new year's first round-the-clock flight mission on February 5, 2020.

The Chinese military conducted a massive transport operation on Thursday to send military medics to Wuhan, capital of Hubei province and epicenter of the novel coronavirus pneumonia outbreak, to help fight the epidemic.

Two Type-96A main battle tanks (MBTs) attached to a combined brigade under the PLA 72nd Group Army rumble through a muddy road while passing a shallow trench during a driving skills training exercise on February 10, 2020.

China's Bayi Aerobatic Team performs during the Singapore Airshow at Changi Exhibition Centre in Singapore, Feb. 11, 2020.

A fighter jet attached to an aviation brigade of the air force under the PLA Northern Theater Command soars to a designated airspace during a flight training mission on February 5, 2020.

A Su-30 fighter jet attached to a naval aviation brigade under the PLA Eastern Theater Command takes off during the air combat confrontation trainingin southeast China's Zhejiang province on February 5, 2020.

Two Z-8B transport helicopters attached to an army aviation brigade under the PLA 71st Group Army fly at an ultra-low altitude through the mist during a flight training exercise in Jiangsu Province on February 5, 2020.

Two pilots sitting in the cockpit operate their J-10 fighter jet to take off for a combat sortie during the first flight training after the Chinese Spring Festival on February 5,

A pilot assigned to an aviation brigade of the air force under the PLA Southern Theater Command navigates his fighter jet to keep flight formation with other three fighter jets during an aerial patrol mission on February 4, 2020.

The comprehensive supply ship Weishanhu delivers dry and liquid cargoes simultaneously to the guided-missile destroyer Yinchuan during the first underway replenishment in eastern waters of the Gulf of Aden on February 3, 2020.

Military medics test facilities at wards of Huoshenshan (Fire God Mountain) Hospital to make preparations for the treatment of patients infected with the novel coronavirus in Wuhan, capital of Hubei Provinceon Feb. 3, 2020.

Aerial photo shows the construction site of Leishenshan Hospital in Wuhan, central China's Hubei Province, Feb. 4, 2020.

Fighter jets attached to an aviation brigade of the air force under the PLA Western Theater Command taxi in close formation on the tarmac after leaving their aircraft hangars for a combat flight training mission on January 22, 2020.

Eight large-scale transport aircraft attached to the PLA Air Force arrived at the Tianhe International Airport on Feb. 2, 2020, delivering 795 military medical personnel and 58 tons of supplies to help Wuhan fight against the novel coronavirus epidemic.

Medical staff test facilities and make the bed at Huoshenshan (Fire God Mountain) Hospital to make final preparations to admit patients infected with the novel coronavirus in Wuhan, central China's Hubei Province, Feb. 3, 2020. (Xinhua)

A J-10 fighter jet attached to an aviation brigade of the air force under the PLA Southern Theater Command takes off for a flight patrol mission on January 29, 2020.

The Type 052D destroyer Hohhot attached to a far-sea joint training fleet with the navy under the PLA Southern Theater Command receives food supplies from the Type 901 fast replenishment ship Chaganhu in waters of the Pacific Ocean on January 27, 2020.

A scout assigned to a combined brigade under the PLA 73rd Group Army operates an unmanned aerial vehicle to find the targets during a long-distance hike on January 15 in China's Fujian Province.

A J-11 fighter jet attached to an aviation brigade of the air force under the PLA Northern Theater Command takes off for a routine patrol mission on January 24, 2020.

A cluster of attack helicopters attached to a helicopter regiment of the PLA Air Force airborne units lift off from their parking apron for a tactical flight training exercise on January 17, 2020.

A soldier in MOPP operates an optical sighting device to assist the erection of a ballistic missile system during a night training exercise conducted by a brigade under the PLA Rocket Force on January 16, 2020.

Pilots assigned to an aviation brigade of the air force under the PLA Northern Theater Command taxi their newly modified fighter jet out of an aircraft shelter for a flight training exercise on January 8, 2020.

An airman piloting a J-10 fighter jet waits in a hot pit area for the approval to take off during a routine patrol mission organized by an aviation brigade of the air force under the PLA Southern Theater Command on January 17, 2020.

A ground crew member assigned to an aviation brigade of the air force under the PLA Eastern Theater Command conducts maintenance check on the undercarriage of a fighter jet before a recent round-the-clock flight training exercise.

Paratroopers assigned to a brigade under the PLA Air Force’s airborne troops open their parachutes after jumping out of a transport aircraft during a parachute training exercise in mountainous area of central China’s Hubei Province in mid-January, 2020.

Fighter jets attached to an aviation brigade of the air force under the PLA Western Theater Command taxi on the flightline for a night flight mission on January 12, 2020.

Fighter jets conduct elephant walk during a round-the-clock combat power exercise organized by an aviation brigade of the air force under the PLA Northern Theater Command on January 8, 2020.

A J-11 fighter jet attached to an aviation brigade of the air force under the PLA Eastern Theater Command takes off from a military airfield during the round-the-clock flight training on January 6, 2020.

A JH-7 fighter bomber attached to an aviation brigade of the air force under the PLA Southern Theater Command gets ready to taxi out of its aircraft hangar for a round-the-clock flight training mission on January 7, 2020.

Multi-type tanks attached to an armored regiment under the PLA Xinjiang Military Command rumble through a dirt road at night during a real combat field training exercise in northwest China's Xinjiang Uygur Autonomous Region on January 6, 2020.

Soldiers assigned to a tactical unit under the Chinese People's Armored Police Force march in formation during a long-distance maneuver in north China in early January, 2020.

Infantrymen assigned to an armored regiment under the PLA Xinjiang Military Command operate their main battle tanks to set up a defensive position on snow-covered road during a maneuvering operation in Xinjiang Uygur Autonomous Region on January 2, 2019.