How did Yan Ning, a tutor at Princeton, learn psychology?

Studied at Princeton University. Yan Ning, female, was born in Zhangqiu District, Jinan City, Shandong Province in November 1977. She is a structural biologist and a foreign academician of the National Academy of Sciences of the United States. He once said in an interview that his tutor at Princeton University studied psychology at Princeton University, so he really wanted to learn it. Yan Ning is mainly engaged in research on important membrane transport proteins related to diseases, the structure and working mechanism of voltage-gated ion channels, and the molecular mechanism of membrane proteins regulating cholesterol metabolism pathways.