层 ㄘㄥ ˊ céng 峦 ㄌㄨㄢ ˊ luán 叠 ㄉㄧㄝ ˊ dié 嶂 ㄓㄤ ˋ zhàng 層 ㄘㄥ ˊ céng 巒 ㄌㄨㄢ ˊ luán 疊 ㄉㄧㄝ ˊ dié 嶂 ㄓㄤ ˋ zhàng range upon range of mountains (idiom)