洛陽紙貴 [ㄌㄨㄛˋ ㄧㄤˊ ㄓˇ ㄍㄨㄟˋ; luo4 yang2 zhi3 gui4] lit. to push up paper prices in Luoyang (idiom); fig. sensational popularity of a new book ◄ ►