The leadership of the Communist Party of China (CPC) is vital to China's economic and social development and only high-quality Party building will lead to high-quality development, Jiang Jinquan, director of the Policy Research Office of the CPC Central Committee, said during a press conference on Friday of the CPC Central Committee's fifth plenary session.

Jiang said the way the COVID-19 pandemic was brought under control in China and the country's economic performance showcased the strong leadership of the CPC.