The word "风声" is formed through a direct and evocative conceptual combination of its two component characters. It begins with the tangible, physical image of "风" (wind), an invisible natural force, and combines it with "声" (sound), the audible effect it produces. This creates the literal core meaning of "the sound of the wind". However, its formation relies on the metaphorical extension of this physical phenomenon; just as wind is unseen yet carries sound, so too can information or rumors travel unseen yet be heard indirectly. Thus, the complete word is formed by fusing the concrete sensory experience to abstractly represent intelligence, gossip, or news circulating on an unseen current.