布衣 (bù yī) literally means 'cloth garment' — 布 (bù) means 'cloth' or 'fabric', and 衣 (yī) means 'clothing' or 'garment'. Historically, it referred to simple, un-dyed hemp or cotton clothing worn by ordinary people in ancient China, in contrast to the silk robes of nobles and officials. Because this humble attire was so closely associated with commoners, 布衣 evolved into a classical literary term for 'commoner' or 'person of humble origin', often used with modesty or poetic dignity.

Today, 布衣 appears mainly in formal writing, historical texts, idioms (e.g., 布衣之交 — 'friendship between commoners'), and speeches invoking traditional values. It carries connotations of simplicity, integrity, and down-to-earth virtue — not poverty per se, but moral authenticity rooted in everyday life. Learners should recognize it as a culturally rich, somewhat literary term rather than modern colloquial speech.