"Winning wars should be the top responsibility for the reorganised military agencies under the Central Military Commission (CMC) headed by President Xi Jinping," a commentary in the official daily of People's Liberation Army said.
The commentary, the second in a series since four military headquarters had been rearranged into 15 new agencies under the CMC by President Xi on Monday, said China's security situation faced several risks.
Unwilling to see socialist China grow stronger, "antagonist forces" are trying to contain the country, it said.
Underscoring the importance of safeguarding sovereignty, security and development, the PLA Daily article urged the CMC agencies to focus on winning wars while improving warfare capacity and quality.
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The agencies should lose no time in adjusting to the new operational command system, actively engage in research, drawing up regulations and training personnel, to ensure a united, effective joint-command system, it said.
China is also locked up in a dispute with Japan over the uninhabited islands in the East China Sea.
Also the India-China border dispute remained unresolved even though both the countries have made efforts to improve relations and initiated several measures to keep the situation along the borders peaceful.
(REOEPNS FGN 12)
President Xi, who is also the CPC chief beside being the chairman of the CMC which makes him the strongest Chinese leader in recent times, said military leaders must adhere to the Party spirit, obey political discipline, and "be politically intelligent," with firm political faith and right political stance.
Xi said that the military organs must concentrate on the study of military affairs, wars and how to fight battles and strengthen their awareness in preparing for war at any time.
In a major reform of the military, Xi has reorganised PLA's four military headquarters, staff, politics, logistics and armaments into 15 new agencies under the CMC.
The new structure includes new commissions -- discipline inspection, politics and law and science and technology as well as the general office, Xinhua report said.
The reform also includes formation of five more divisions, administration, auditing, international cooperation, reform, organisational structure and strategic planning.
Xi described the reshuffle as "a breakthrough" and called the new leadership system "a crucial step" toward a stronger military.
This is part of major reforms initiated by Xi to revamp the PLA. His reforms include retrenchment of three lakh troops to make the force lean and mean.