BEIJING - Xi Jinping, chief of China's ruling Communist Party of China (CPC), said Tuesday that the Party's upcoming year-long campaign will be a "thorough cleanup" of undesirable work styles such as formalism, bureaucratism, laxity and extravagance.

"The main task of the campaign focuses on building work styles, " Xi, General Secretary of the CPC Central Committee, said at a high-profile conference to deploy the campaign.

Party members should be critical and self-critical in the spirit of rectifying improper work styles, Xi said.

The Political Bureau of the CPC Central Committee decided at a conference in April to launch the campaign to boost ties between Party members and the public from the latter half of this year.

The move will focus on Party organs and officials at or above the county level, who are required to reflect on their own practices and correct any misbehavior.

Tuesday's conference was also attended by the other six members of the Standing Committee of the Political Bureau of the CPC Central Committee, including Li Keqiang, Zhang Dejiang, Yu Zhengsheng, Liu Yunshan, Wang Qishan and Zhang Gaoli.