Liu Yunshan (C, back), a member of the Standing Committee of the Political Bureau of the Communist Party of China (CPC) Central Committee and president of the Party School of the CPC Central Committee, attends a graduation ceremony held by the Party School in Beijing, July 15, 2013. Liu awarded diplomas to participants who have just completed their studies in the school's 2013 spring semester during the ceremony on Monday. [Photo/Xinhua]

BEIJING - Chinese leader Liu Yunshan attended a graduation ceremony held by the Party School of the Communist Party of China (CPC) Central Committee on Monday.

Liu, president of the CPC's top Party school and a member of the Standing Committee of the Political Bureau of the CPC Central Committee, awarded diplomas to participants who have just completed their studies in the school's 2013 spring semester.

Li Jingtian, the school's executive vice-president, called on the graduates to play exemplary roles in practicing and promoting the "mass line," keeping close ties with the public.