Daily Chinese Idiom Guessing Game
To be highly skilled and handle tasks with plenty of room; to do something with ease and proficiency.
刀刃运转于骨节空隙中，在有回旋的余地。比喻工作熟练，有实际经验，解决问题毫不费事。
语出《庄子·养生主》彼节者有间，而刀刃者无厚。以无厚入有间，恢恢乎其于游刃必有余地矣。”
With years of practice, she played the piano with 游刃有余, never missing a note.