The Chinese word **日光浴** (rìguāngyù), meaning "sunbathing," is a transparent compound formed through semantic combination: **日光** (rìguāng, "sunlight") + **浴** (yù, "bath"). It follows a descriptive "X + activity" structure, literally translating to "sunlight bath," where the first element specifies the medium or source (sunlight) and the second denotes the act of bathing. This formation is both logical and analogical, conceptually mirroring the Western practice while utilizing native Chinese morphemes to create a readily understood term.