万籁无声 is formed by combining 万籁, meaning "all natural sounds", with 无声, meaning "without sound". Here, 万籁 serves as the subject referring to every audible phenomenon in nature, specifically with 籁 denoting sounds from natural sources like wind through hollows, and 万 emphasizing totality. 无声 acts as the predicate stating the absence of sound. The phrase structurally follows a subject-predicate arrangement from classical Chinese, literally expressing that all sounds are silent to convey complete stillness.