我不是一个坏人你坏起来不是人
[wŏ bù shì yī gè huài rén nĭ huài qĭ lái bù shì rén]
Translated as 'I am not a bad person, but when you act badly, you’re no human.' It suggests a self-proclaimed innocence with a pointed criticism toward someone else’s behavior, highlighting moral contrasts.