wǎng​fèi​xīn​jì

to scheme in vain

Senses

枉费心计/ 枉費心計 wǎng​fèi​xīn​jì to scheme in vain

to waste one's time and effort on calculations or schemes to no avail; to rack one's brains only to end up with nothing

References

synonym 枉费心计/枉費心計 徒劳无功/徒勞無功
synonym 枉费心计/枉費心計 白费心思/白費心思