At the same time, a key meeting of the Communist Party of China (CPC) decided to carry on with the collective leadership system, introduced in 1981 to ensure that no individual dominated the party leadership.
A communique issued by top CPC leaders after a four-day close-door meeting of 370 top leaders here called on all its members to "closely unite around the CPC Central Committee with Comrade Xi Jinping as the core", the state-run Xinhua news agency reported.
The move to make Xi the "core" leader gives him greater influence over the looming top reshuffle of the party late next year, analysts say.
But contrary to the speculation that the party may dispense with the over three-decade rule stipulating collective leadership, the plenum stressed the importance of adherence to the collective leadership system of CPC.
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"They discussed the matter at the sixth plenary session of the 18th CPC Central Committee, calling for a combination of collective leadership with individual responsibility," the report said.
The seven members looking after various aspects of governance included Premier Li Kiang.
The Standing Committee embodies collective leadership in CPC parlance.
Since taking over as the leader of the party in November 2012 and as President and chief of the military in 2013, Xi has been regarded as the most powerful leader after Mao wielding enormous powers, thus reducing the importance of the Standing Committee.
As an important part of the CPC's fundamental organisation principle of democratic centralism, the collective leadership system "must always be followed and should not be violated by any organisation or individual under any circumstance or for any reason," the communique said.
The communique called on leading officials to enhance their understanding of the overall situation and relevant responsibilities, and to resolutely enforce decisions made by party organisations.
The plenum also approved two documents on the discipline of the party including the norms of political life within the party under the new situation and a regulation on intra-party supervision, Xinhua quoted a communique as saying.
Requesting an official post, honour or special treatment
is not allowed under any circumstances, it said.
The communique also underscored that the practice of bargaining with party organisations to secure a promotion or disobeying any decisions made by party organisations is also forbidden.
The plenum which concluded its four day meeting here today said members should resolutely safeguard the authority of the CPC and its central, unified leadership while pushing forward the comprehensive and strict governance of the party.
The communique also urged them to become more aware of the need to uphold political integrity, keep in mind the bigger picture, follow the CPC as the core of the Chinese leadership and act consistently with CPC Central Committee policy.
Plenary is a key body of the CPC which formulate polices to be approved by National Congress held every five years.
The 19th Communist Party of China (CPC) National Congress will be held in the second half of 2017 in Beijing the CPC communique said.
The 18th Congress held in 2012 elected Xi and Premier Li Kequiang who would have ten year tenure.
The Congress to be held next year was expected to elect five new members to the Standing Committee to replace those who are set to retire. Only Xi and Li were expected to continue.
It also confirmed the expulsion of former senior military officials Fan Changmi and Niu Zhizhong.
They were expelled as as part of massive anti-corruption campaign carried out by Xi after he took over as CPC head.
Over 1.01 million officials of the 88.75 million-strong CPC were punished in the anti-graft campaign amid allegations that Xi has also used it to consolidate his hold on the party.