何者
hé​zhě

which one

hé​zhě which one
  1. 何 hé pronoun
    what
    (literary) what; which; where
  2. 者 zhě pronoun
    [pronoun]
    (bound form) used after a number or direction word to refer back to people or things previously mentioned; translates as "the ... one" (e.g. "the former", "the two")

hé​zhě why
  1. 何 hé adverb
    why
    (literary) why; how
  2. 者 zhě conjunction
    [pause]
    (literary) used after a subject or phrase to indicate a slight pause before a definition or explanation