The Chinese word **日益** (rìyì) is a compound adverb formed through the morphological combination of two characters: **日** (rì), meaning "day" or "daily," which here functions adverbially to indicate a progressive, day-by-day passage of time, and **益** (yì), meaning "to increase," "to benefit," or "more." When combined, they create a single lexical unit meaning "increasingly," "more and more," or "day by day," where **日** modifies **益** to express the idea of a gradual, continual growth or intensification over time. This structure is characteristic of classical Chinese grammatical patterns where a noun (**日**) is used adverbially to modify a verb or adjective (**益**), resulting in a fixed, inseparable word used exclusively as an adverb in modern Chinese.