深ㄕㄣshēn藏ㄘㄤˊcáng若ㄖㄨㄛˋruò虛ㄒㄩxū

深藏寶貨，不炫耀人前。比喻真才實學的人深藏不露。《史記·卷六三·老子韓非列傳·老子》：「良賈深藏若虛，君子盛德，容貌若愚。」似大智若愚

英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