又要马儿跑，又要马儿不吃草

yòu yào mǎ r pǎo , yòu yào mǎ r bù chī cǎoyouyaomarpao,youyaomarbuchicao

1. lit. you can't expect the horse to run fast but not let it graze (idiom)
2. fig. you can't have your cake and eat it, too

Study it in Yanamino