HSK 1
一下
yíxià数量（副）
Meaning
(after a verb) a bit; a little (indicating brief duration, or softening the tone, or suggesting giving sth a try); all at once; suddenly
Stroke order
Appears across levels (1（4）) in the HSK 3.0 word list.
(after a verb) a bit; a little (indicating brief duration, or softening the tone, or suggesting giving sth a try); all at once; suddenly