wā​kōng​xīn​si

to rack one's brains

Senses

挖空心思 wā​kōng​xīn​si (also wā​kōng​xīn​sī) to rack one's brains

to rack one's brains; to think of every possible way to do something, often used in a negative sense to describe scheming or using calculated effort

References

synonym 挖空心思/挖空心思 绞尽脑汁/絞盡腦汁
synonym 呕心沥血/嘔心瀝血 挖空心思/挖空心思
synonym 煞费苦心/煞費苦心 挖空心思/挖空心思