哪

na
(emphatic sentence-final particle, used instead of 啊 a after a word ending in "n")

CEDICT

Homographs

哪 nǎ
  1. how
  2. which
哪 né
  1. used in 哪吒 Nézhā
  2. Taiwan pr. nuó
哪 něi which? (interrogative, followed by classifier or numeral-classifier)