yì​huò

could it be

抑或 yì​huò
could it be conjunction
used to introduce a speculative or rhetorical question, often suggesting an alternative explanation

Or perhaps he didn't receive the letter at all?

or conjunction
used as a conjunction to connect alternatives, typically in a formal or literary question

Is this out of sincerity, or just a polite gesture?

Frequency

Movie subtitles
2.62 per million appears in 1% of films
Written text
4.39 per million

Sources

Definitions
CC-CEDICT