National Central University / Sun Yat-sen University / Chinese University of Hong Kong / Chuo University / Chung-Ang University

physics (as an area of study)

academic major

specialize in, major in

a younger sibling

one’s own younger brother / a younger male / (Kagoshima) younger brother

younger brother / younger male

physics, the physical aspects of a phenomenon or a system

(geology, physics) geophysics

astrophysics