韜光養晦

Simplified: 韬光养晦

tāoguāngyǎnghuì ㄊㄠ ㄍㄨㄤ ㄧㄤˇ ㄏㄨㄟˋ

    • to conceal one's strengths and bide one's time (idiom)
    • to hide one's light under a bushel

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Sources