Zhang Dejiang, chairman of the Standing Committee of China's National People's Congress (NPC), joins a panel discussion with deputies to the 12th NPC from Zhejiang Province at the annual session of the NPC in Beijing, capital of China, March 5, 2017. (Xinhua/Gao Jie)

BEIJING -- Senior Chinese leaders on Sunday joined national legislators in deliberating the government work report, stressing the main theme of "seeking progress while maintaining stability."

The report was delivered by Premier Li Keqiang at the opening of the annual session of China's top legislature, the National People's Congress (NPC).

Zhang Dejiang, Yu Zhengsheng, Liu Yunshan and Wang Qishan,all members of the Standing Committee of the Political Bureau of the Communist Party of China (CPC) Central Committee, joined national lawmakers in deliberating the report.

Zhang, also chairman of the NPC Standing Committee, joined lawmakers from east China's Zhejiang Province.

Zhang stressed concrete actions to implement the decisions and policies of the CPC Central Committee, promote the steady and healthy development of the economy and the harmony of the society to create a favorable environment for the 19th National Congress of the Party, slated for later this year.

Yu Zhengsheng, also chairman of the Chinese People's Political Consultative Conference National Committee, joined a delegation of lawmakers from central China's Hubei Province during another panel discussion.

Yu urged Hubei Province to apply the new concepts of development and advance supply-side structural reform.

He called for further efforts to conserve energy and protect the environment to provide the people with clean water, fresh air, safe food and beautiful environment.

Liu Yunshan joined NPC deputies from Inner Mongolia Autonomous Region in their panel discussion.

Liu called for proper understanding of the relations between maintaining stability and seeking progress, stressing efforts to guide social expectations and dissolve risks, while making breakthroughs in reforms.P Major tasks in supply-side structural reform should be accomplished to improve growth quality and efficiency, he added.

Wang Qishan, also secretary of the CPC Central Commission for Discipline Inspection, joined NPC deputies from Beijing.

Wang stressed the need to explore effective CPC self-supervision for long-term governance, deepen reform of the national supervisory system and establish an anti-graft mechanism under the unified leadership of the Party.

The CPC should enhance supervision over itself and state organs to realize full-coverage oversight of all public servants, he added.