xiān​háo​bù​shuǎng

to be extremely accurate

  1. fine
    (bound form) fine; minute; delicate
  2. fine hair
    (bound form) fine long hair or fur on an animal; also refers to the tip of a writing brush made from such hair
  3. 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
  4. error
    (bound form) error; deviation; mistake (typically used in the negative to mean precise)