别为不该为的人伤了不该伤的心
[bié wéi bù gāi wéi de rén shāng le bù gāi shāng de xīn]
The name translates to 'Do not hurt the heart that should not be hurt, for the person that you shouldn’t even do so'. It expresses an advice to protect one's emotional health by choosing wisely who to give their heart to, suggesting it's easy to get hurt when dealing with people carelessly.