BEIJING, April 29 -- Senior Communist Party of China (CPC)leader Liu Yunshan attended a graduation ceremony at the Party School of the CPC Central Committee on Wednesday.

Liu, president of the school and member of the Standing Committee of the Political Bureau of the CPC Central Committee, presented diplomas to the 592 graduates of the school's 2015 spring semester.

The school trains CPC and government officials.

He Yiting, the school's executive vice president, called on the graduates to follow the "three stricts and three honests," a description of requirements for officials proposed by President Xi Jinping.

The slogan refers to "be strict in morals, power and self-discipline," along with "be honest in decisions, business and behavior."