Correct

心狠

/ xīn hěn /
Strokes

Example

As an Adjective

cruel; merciless

1
Gàn
zhè
háng
必须
xīnhěn
心狠
  
,
shuí
biéren
别人
shuí
chīkuī
吃亏
  

In this business you have to be tough, and the devil take the hindmost.

2
Miànshàn
面善
xīnhěn
心狠

be innocent in appearance but cruel at heart