The Chinese idiom 轻举妄动 (qīng jǔ wàng dòng), meaning "to act recklessly or impulsively," is a four-character set phrase formed through parallel and reinforcing compounding. It is composed of two nearly synonymous verb phrases: "轻举" (qīng jǔ), where 轻 means "light, rash" and 举 means "to act, to lift," thus "rash action"; and "妄动" (wàng dòng), where 妄 means "reckless, wild" and 动 means "to move, to act," thus "reckless movement." The two parts are combined in a coordinated structure (并列结构), where the repetition of the concept of thoughtless action intensifies the overall meaning, creating a vivid expression that warns against acting without careful consideration or proper grounds.