yòu​yào​mǎ​r​hǎo​yòu​yào​mǎ​r​bù​chī​cǎo

you can't have your cake and eat it too

又要马儿好,又要马儿不吃草 又要馬兒好,又要馬兒不吃草 yòu​yào​mǎ​r​hǎo​yòu​yào​mǎ​r​bù​chī​cǎo
you can't have your cake and eat it too
literally 'you want the horse to be good, but you also want it not to eat grass'; used to describe someone who expects high performance or results without being willing to pay the necessary cost or effort