又要马儿跑，又要马儿不吃草
yòu​yào​mǎ​r​pǎo​yòu​yào​mǎ​r​bù​chī​cǎo

you can't have your cake and eat it too

又要马儿跑，又要马儿不吃草 又要馬兒跑，又要馬兒不吃草 yòu​yào​mǎ​r​pǎo​yòu​yào​mǎ​r​bù​chī​cǎo
you can't have your cake and eat it too
Literally "you expect the horse to run but don't want to let it eat grass"; used to describe someone who wants results without being willing to pay the necessary price or provide the necessary resources.