fēng​mǎ​niú​bù​xiāng​jí

totally unrelated

  1. wind
    wind; the movement of air caused by differences in air pressure
  2. horse
    horse; any animal of the horse family; large mammal used for riding, pulling carts, or farm work
  3. ox
    ox; cow; bull; cattle; any of various bovine animals
  4. 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
  5. xiāng adverb
    mutually
    each other; one another; mutually
  6. to match
    To be as good as or equal to something else; often used in the negative to mean not as good as.