Correct

萧萧

/ xiāo xiāo /
Strokes

Example

As an Onomatope

(of wind) whistle; rustle

1
Fēng
xiāoxiāo
萧萧

The wind soughs.

As an Onomatope

(of a horse) whinny

2
xiāoxiāo
马萧萧

The horse whinnies/neighs.

As an Adjective

(of hair) sparse; thinly-scattered

3
Bái
白发
xiāoxiāo
萧萧

sparse grey hair