哦
o
friendly reminder at the end: "…, OK?", "mind you"
Every meaning
o
- (particle) at the end of a sentence, adds a friendly or reminding tone
ò
- (interjection) oh (realization)
ó
- (interjection) oh? (doubt, surprise)
é
- (literary) to chant; to intone (as in 吟哦)
Meanings are from Mandarin The Wild’s own dictionary. Levels follow the official HSK word list (the exam’s 2025 syllabus, levels 7–9 shown together).