Chinese phrase
凭什么？ píng shén me
Meaning
What gives you the right?
When to use it
It challenges someone's right to do or say something. It often questions the basis for a claim or action and can sound challenging.
Example dialogue
你凭什么这么说？ nǐ píng shén me zhè me shuō
What gives you the right to say that?
我有证据，你不信可以看看。 wǒ yǒu zhèng jù nǐ bú xìn ké yǐ kàn kàn
I have evidence. If you don't believe me, you can see for yourself.