Correct

/ chī /
Strokes

Definition

(onom.) giggling/breathing/tearing of paper, ripping of fabric etc

Example

As an Onomatope

titter; rip

1
Chī
de
shēng
  
,
dīngzi
钉子
de
qúnzi
裙子
gōu
le
dòng
  

The nail ripped a hole in her skirt.

2
Chī
de
shēng
kāi
撕开
xìnfēng
信封

rip open an envelope

3
Chīchī
哧哧
de
xiào

titter; chuckle