何以 héyǐ why Definitions Defs Origin Strokes Stroke Words Sentences Sents héyǐ why 何 hé adverb why (literary) why; how以 yǐ preposition because of because of; due to; for the reason thathéyǐ with what 何 hé pronoun what (literary) what; which; where以 yǐ preposition by means of to use; by means of; with; using the tool or method introducedhéyǐ how 何 hé adverb why (literary) why; how以 yǐ preposition by means of to use; by means of; with; using the tool or method introducedhéyǐ whence 何 hé pronoun what (literary) what; which; where以 yǐ preposition according to according to; based on; following a specific standard or calculation