The guided-missile frigate Chaozhou (Hull 595) attached to a naval frigate flotilla under the Eastern Theater Command speeds through wind and waves during a combat training on April 29, 2021.

A fighter jet attached to an aviation brigade with the navy under the PLA Southern Theater Command takes off for a round-the-clock training exercise on April 20, 2021.

Armed policemen in Mission-Oriented Protective Posture (MOPP) gears use the chemical agent detector to locate the simulated toxic agents for sampling analysis in the railway ballast.

Paratroopers assigned to an airborne brigade under the PLA Air Force jump from the storehouse of a transport aircraft during a round-the-clock fully-formed force projection drill in mid-April, 2021.

Warships attached to a destroyer flotilla with the navy under the PLA Eastern Theater Command steam in astern formation in waters of the East China Sea during the realistic training on April 23, 2021.

Fighter jets attached to an aviation brigade of the air force under the PLA Central Theater Command take off for cross-area maneuver training in April 19, 2021.

Multi-type helicopters attached to an army aviation brigade under the PLA 72nd Group Army hover over the field during a formation flight training exercise on April 21, 2021.

Fighter jets attached to a naval aviation brigade under the PLA Eastern Theater Command get ready to take off for a flight training exercise on April 17, 2021.

Maintenance men assigned to a helicopter regiment of an air assault brigade under the PLA Air Force's airborne troops perform inspections on helicopter before a training exercise on April 19, 2021.

Naval vessels attached to an auxiliary ship group under the PLA Southern Theater Command perform alongside liquid cargo replenishment-at-sea during a maritime training exercise in mid- April, 2021.

Attack helicopters attached to a naval aviation brigade under the PLA Eastern Theater Command sit in formation on the parking apron during a flight training exercise in April 19，2021.

Fighter jets attached to an aviation brigade of the air force under the PLA Southern Theater Command get ready to take off from the runway for a flight training exercise in late April, 2021.

Ship-borne helicopter attached to a naval aviation regiment under the PLA Eastern Theater Command prepares to land on the simulated flight deck at night during a round-the-clock training exercise on April 18, 2021.

Members assigned to a female UAV detachment under the PLA 72nd Group Army return from an actual combat training exercise in early April, 2021.

Armored minesweeping vehicle attached to the armored detachment of a brigade under the PLA 72nd Group Army carries out a driving skill training exercise on April 12, 2021.

A ship attached to a search and rescue flotilla with the navy under the PLA Northern Theater Command steams in the sea during a maritime training exercise in early April, 2021. The training was aimed at examining the troops' rescue ability in actual combat context.

Soldiers assigned to a brigade of the PLA 73rd Group Army run to board a transport helicopter during an air assault landing training exerciseon April 14, 2021.

Fighter bomber attached to an air force aviation unit under the PLA Eastern Theater Command takes off for a round-the-clock training exercise on April 16, 2021.

A ship-borne helicopter lifts off from the flight deck of a warship during a training exercise of landing and taking off from the ship's helipad on April 17, 2021.

Fighter bombers attached to an air force aviation division under the PLA Eastern Theater Command carry out flight training under low-visibility conditions on March 30, 2021.

Members of a special operations force assigned to the PLA Macao Garrison participate in a comprehensive combat capability assessment，in order to check the combat capabilities of its special operations forces on coordination, skills and tactics on Apr 18, 2021.

Fighter jets attached to a naval aviation brigade under the PLA Eastern Theater Command rush to designated airspace for a round-the-clock training exercise in late March, 2021.

Warship attached to a naval landing ship flotilla under the PLA Southern Theater Command fires its auxiliary gun at mock sea targets during a maritime training exercise on March 27, 2021.

Soldiers assigned to a combined arms brigade under the PLA 73rd Group Army queue to board a transport helicopter during day-and-night fast-roping training in early April, 2021.

Amphibious armored vehicles attached to a brigade of the PLA 73rd Group Army march forward in the water during a maritime driving drill on March 29, 2021.

A ground crew member assigned to an aviation regiment with the navy under the PLA Southern Theater Command guides an anti-submarine patrol aircraft towards the take-off line during a submarine search training exercise in the middle of March, 2021.

A gunship attached to an army aviation brigade under the PLA 72nd Group Army releases infrared jamming projectiles during an aerial combat training exercise in southern Jiangsu Province on March 30, 2021.

A tank attached to a combined arms brigade under the PLA 72nd Group Army attacks mock targets while advancing during a live-fire training exercise from March 26 to 29, 2021.

A Landing Craft, Air Cushion (LCAC) attached to a naval landing ship flotilla under the PLA Southern Theater Command arrives on shore during a beach landing training exercise on March 24, 2021.

A bomber attached to an aviation division of the air force under the PLA Central Theater Command takes off for the cross-area maneuver training in late March.

Helicopters attached to an aviation brigade under the PLA Xinjiang Military Command take off in the morning light during recent tactical training aiming to improve pilots' flight skills and combat capability.

A Warship formation attached to a naval flotilla under the PLA Southern Theater Command performs replenishment-at-sea during a maritime training exercise in early spring, 2021.

Soldiers assigned to an engineering and chemical defense element of a combined arms brigade under the 81st Group Army keep vigilance around an armoredvehicle during the tactical training in late March, 2021.

A fighter jet assigned to an aviation brigade of the air force under the PLA Northern Theater Command taxies on the flightline after replenishing ammunition during a cross-area flight training exercise on March 24, 2021.

An armed helicopter assigned to an army aviation brigade under the PLA Tibet Military Command carries out live-fire training on March 25, 2021, aiming to improve the air combat capability.

Soldiers assigned to an army aviation brigade under the PLA 72nd Group Army rappel from a transport helicopter during a fast-roping training exercise which aims to beef up the troops' coordinated operational capability on March 20, 2021.

A group of engineering vehicles attached to an engineer element under the PLA 72nd Group Army march forward in hilly area during the breaching training on March 22, 2021.

Maintenance men assigned to an aviation regiment with the navy under the PLA Southern Theater Command perform inspections on an anti-submarine patrol aircraft before a round-the-clock training exercise on March 10, 2021.

Four pilots and two instructors assigned to an aviation brigade of the air force under the PLA Northern Theater Command fly their fighter jets in delta formation during a flight exam on February 26, 2021.

An anti-submarine patrol aircraft attached to an aviation regiment of the navy under the PLA Southern Theater Command takes off during an anti-submarine training exercise on March 15, 2021.