嗯，我知道了。
Mm, I understand.
嗯
(a groaning sound)
interjection HSK 3.0 · Band 4
Watch it being written
Every character draws itself, stroke by stroke. Then grab the brush: trace it yourself and hear the word when you finish.
嗯
Nice writing!
See it in sentences
嗯，这个主意不错。
Mm, that is a good idea.