Correct

嘤嘤

/ yīng yīng /
Strokes

Example

As an Onomatope

(of birds) sing; chirp

1
Niǎo
míng
yīngyīng
嘤嘤
  

Birds chirp.

As an Onomatope

sob

2
shuō
zhāo
shuō
zhāo
  
,
yīngyīng
嘤嘤
de
le
lai
起来
  

As she spoke, she began to sob.