你无情别怪我无义
[nĭ wú qíng bié guài wŏ wú yì]
'Ni Wu Qing Bie Guai Wo Wu Yi' means 'If you are heartless, do not blame me for being unrighteous'. This implies a reciprocal or tit-for-tat attitude in relationships where the other party is seen as lacking emotional depth or care.