Chen Duxiu was a Chinese revolutionary socialist, educator, philosopher and author, who co-founded the Chinese Communist Party (CCP) with Li Dazhao in 1921. From 1921 to 1927, he served as the Communist Party's first general secretary. Chen was a leading figure in both the Xinhai Revolution that overthrew the Qing dynasty and the May Fourth Movement for scientific and democratic developments in the early Republic of China. After his expulsion from the CCP in 1929, Chen was for a time the leader of China's Trotskyist movement.

The Chinese Communist Party (CCP), officially the Communist Party of China (CPC), is the founding and sole ruling party of the People's Republic of China (PRC). Under the leadership of Mao Zedong, the CCP emerged victorious in the Chinese Civil War against the Kuomintang. In 1949, Mao proclaimed the establishment of the People's Republic of China. Since then, the CCP has governed China and has had sole control over the People's Liberation Army (PLA). Successive leaders of the CCP have added their own theories to the party's constitution, which outlines the party's ideology, collectively referred to as socialism with Chinese characteristics. As of 2023, the CCP has more than 98 million members, making it the second largest political party by membership in the world after India's Bharatiya Janata Party.