《水经注·卷十五》
孙登向山顶走去，边走边长啸，有如箫管笙簧齐奏，响声震荡着山谷。
登上峰行且啸，如萧韶笙簧之音，声振山谷。
Sun Deng walked towards the top of the mountain, whistling all the way, as if a flute and pipe string were being played together, the sound echoing through the valley.