China's Central Military Commission (CMC) has called for tightened military secrecy amid an "austere and complicated" situation.

The secrecy is to ensure that the Chinese army is capable of joining a war and winning, said a report in the Wednesday edition of the People's Liberation Army (PLA) Daily, quoting a document approved by President Xi Jinping and issued by the CMC.

The document called on Chinese military staff to have a clear understanding of the austere and complicated situation facing the protection of military secrecy, to always remain sober-minded and to spare no effort to keep secrets safe.

The military's sense of responsibility and awareness of its adversaries should be promoted, the document said.

It also required a special check-up and overhaul to fix loopholes in the management of documents and other items carrying classified information as well as secret sites and activities.

With the widespread use of computer networks, mobile communications and other technologies, both administrative and technical measures should be taken to ensure infallible security of confidential military information, it said.

The PLA Daily also ran a commentary on Wednesday on the new document, saying that military secrecy is of vital importance to the army's survival, development and battle outcomes.

The country is faced with an increasingly complicated security environment and intensified competition in armed forces, which have fueled rivalries in the scramble for information, the commentary said, noting that there is no reason to be too optimistic about current secrecy measures, as problems still exist in certain fields in the army.