深藏若虛 [ㄕㄣ ㄘㄤˊ ㄖㄨㄛˋ ㄒㄩ; shen1 cang2 ruo4 xu1] to hide one's treasure away so that no-one knows about it (idiom); fig. modest about one's talents to hide one's light under a bushel ◄ ►