冷心病人丧心碍人
[lĕng xīn bìng rén sāng xīn ài rén]
The first two words imply a person who has grown 'emotionally detached/cold-hearted', while the last part suggests such detachment has reached a level affecting and harming others (emotionally/mentally). Generally, it portrays a very bitter person with potentially antisocial traits.