zhēn​rén​bù​lòu​xiàng

to hide one's light under a bushel

  1. spiritual master
    A person who has attained the Way in Daoism; often used as a title for a Daoist master or an immortal
  2. adverb
    not
    Negative adverb used before verbs, adjectives, and other adverbs to indicate negation; also used as a bound-form prefix to form terms with opposite meanings
  3. to show one's true colors
    To reveal one's true face or true nature; to show one's hand.