香闻十里 is a classical Chinese idiom meaning 'fragrance spreads ten li'—a li being an ancient Chinese unit of distance (approx. 500 meters). It vividly describes an aroma so strong and pleasant that it permeates a vast area, evoking poetic imagery of blossoms, incense, or fine food. Literally, 香 means 'fragrance', 闻 means 'to smell' or 'to be perceptible by scent', 十 is 'ten', and 里 is the traditional distance unit. Together, they form a compact, rhythmic phrase emphasizing olfactory pervasiveness rather than literal measurement.

This expression is used almost exclusively in literary, descriptive, or appreciative contexts—especially when praising flowers (like plum blossoms or osmanthus), gourmet dishes, or traditional incense. It carries a warm, elegant, and slightly nostalgic tone, often appearing in poetry, travel writing, or food criticism. It is not used in casual speech or scientific descriptions, nor does it imply any negative connotation like overwhelming or cloying scent—it always suggests delightful, natural fragrance.