谁能告诉我善良是什么
[shéi néng gào sù wŏ shàn liáng shì shén me]
Expresses the confusion of someone who doesn't understand what being good-hearted really means. It suggests that the person might have been disappointed by people pretending to be kind but actually having ulterior motives in society. So they start questioning the definition of real kindness and goodness.