Troops of a combined brigade under the PLA 82nd Group Army assemble at the training range on Jan. 4, 2021. Chinese President Xi Jinping, also general secretary of the Communist Party of China (CPC) Central Committee and chairman of the Central Military Commission (CMC), signed, a mobilization order, the first order of the CMC for 2021, for the military training of the Chinese armed forces. (eng.chinamil.com.cn/Photo by Zhang Yongjin)

A destroyer flotilla of the Navy under the PLA Eastern Theater Command holds a mobilization rally for the new training session at a naval port in Zhoushan, east China's Zhejiang Province, Jan. 4, 2021. (eng.chinamil.com.cn/Photo by Shan Xinzhe)

On Jan. 5, two fighter jets attached to a naval aviation brigade under the PLA Southern Theater Command take off during the first flight training in 2021. (eng.chinamil.com.cn/Photo by Lai Wei)

Special operation troops assigned to a brigade under the PLA Navy Marine Corps have shooting training on Jan. 4, 2021. (eng.chinamil.com.cn/Photo by Lai Wei)

An aviation brigade of the air force under the PLA Northern Theater Command conducts air battle training on Jan.5, 2021. (eng.chinamil.com.cn/Photo by Luo Rong)

The special operation team assigned to a detachment of the Shanxi Armed Police Corps stages an anti-hijacking training exercise on Jan. 4, 2021. (eng.chinamil.com.cn/Photo by Luo Rong)

The armored detachment of a regiment under the PLA Xinjiang Military Command conducts field maneuver training in extremely cold weather on Jan. 4, 2021. (eng.chinamil.com.cn/Photo by Yuan Kai)

Service members assigned to a vessel detachment of Chongqing Armed Police Corps participate in a combat training on Jan. 4, 2021. (eng.chinamil.com.cn/Photo by Tang Zhiyong)