Cai Chang was born in 1900 to a
lower middle class family in Hunan,
Qing China. Her mother left her husband, and enabled her children to attend school by selling her belongings. Cai believed strongly in women's education, and spurned the idea of marriage in favor of a vow of
celibacy. Her mother aided her in this by avoiding an
arranged marriage for Cai. Cai attended the Zhounan Girls' Middle School at
Changsha until 1916. In the winter of 1917–1918, she became one of the first women to join the
New People's Study Society, a
work study program put in place by
Mao Zedong and Cai's brother,
Cai Hesen. This group advocated for women to create their own self-help groups and to become active in politics. Cai, her mother, Cai Hesen, and Cai Hesen's future wife
Xiang Jingyu went to Europe, where Cai was a factory worker. She studied
anarchism,
Marxism, and
Leninism alongside other Chinese socialist feminist scholars, including at the
Communist University of the Toilers of the East in
Moscow. In 1922, Cai married
Li Fuchun, a prominent communist. == Career ==