Correct

/ tōng /
Strokes

Definition

(onom.) thump/thud

Example

As an Onomatope

flop; thump; thud

1
zhī
qīng
青蛙
tōng
de
shēng
tiàojìn
跳进
chítáng
池塘
  

A frog splashed into the pond. / A frog jumped into the pond with a splash.

2
tōng
de
shēng
guì
zài
shang
地上
  

He flopped down on his knees.

3
Kǎoshì
考试
jiāngyào
将要
kāishǐ
开始
  
,
de
xīn
tōngtōng
嗵嗵
zhí
tiào
  

My heart went pit-a-pat when the exam was about to begin.