In 1922, Feng entered Fudan University in Shanghai, initially studied literature. At Fudan, Feng was attracted by newly emerged psychology, so he transferred to the psychological department in 1923. In 1925, a new professor of physiology named Cai Qiao joined Fudan, and the department of biology was founded. Feng became interested in biosciences, especially physiology. In 1926, Feng graduated from the biological department of Fudan (BSc), and became a lecturer at the same department.
