Liu Yunshan (3rd Rrear), a member of the Standing Committee of the Political Bureauof the Communist Party of China (CPC) Central Committee , speaks at a work symposium of the central supervisory teams for the \"mass line\" education campaign, in Beijing, capital of China, July 24,2013. \"Mass line\" refers to a guideline under which CPC officialsand members are required to prioritize the interests of the peopleand persist in representing them and working on their behalf.