只可意会，不可言传
zhǐ​kě​yì​huì​bù​kě​yán​chuán

can be understood but not described

  1. 只 zhǐ adverb
    only
    only; merely; just; limited to a certain scope or amount
  2. 可 kě auxiliary
    can
    can; may; to be able to; to be permitted to
  3. 意会 意會 yì​huì
    to grasp intuitively
    To understand or perceive something through internal reflection or intuition rather than through verbal explanation
  4. ， bù
    non-Chinese
  5. 不 bù 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
  6. 可 kě auxiliary
    can
    can; may; to be able to; to be permitted to
  7. 言传 言傳 yán​chuán
    to convey in words
    to explain or pass on knowledge using speech; to express in words