The structure …什么就是什么
The structure …什么就是什么 
shows that the speaker agrees with the interlocutor or simply does not want to argue with him. It forms phrases like “whatever you..." or "as someone pleases”.
We usually use this structure in colloquial speech.
shows that the speaker agrees with the interlocutor or simply does not want to argue with him. It forms phrases like “whatever you..." or "as someone pleases”.
We usually use this structure in colloquial speech.Scheme
verb
什么就是什么
Pay attention
Sometimes 就 can be omitted.
Examples
好吧好吧，你说什么是什么
Okay, okay. It’ll be whatever you say
hǎo ba hǎo ba, nǐ shuō shénme shì shénme
他选择经验什么就是什么
What he chooses is what he gets
tā xuǎnzé jīngyàn shénme jiù shì shénme
该是什么就是什么
Everything is as it should be
gāi shì shénme jiù shì shénme