何以

héyǐ
  1. (literary) why
  2. how

CEDICT

literary

Entry Composition

1 何 hé
  1. what
  2. how
  3. why
  4. which
  5. carry
=2 以 yǐ old variant of 以 yǐ
=2 以 yǐ old variant of 以 yǐ
=2 以 yǐ
  1. to use
  2. by means of
  3. according to
  4. in order to
  5. because of
  6. at (a certain date or place)