游刃有余

遊刃有餘
yóurènyǒuyú
handling a butcher's cleaver with ease (idiom); to do sth skillfully and easily

CEDICT

  1. (figurative) to do a task with skills and ease; to achieve something effortlessly
  2. (literally) to handle a blade skillfully
  3. to do a task with skills and ease; to achieve something effortlessly
  4. to handle a blade skillfully

Wiktionary

好的厨师宰牛时刀刃在骨节间的空隙运转，觉得空隙还很大。语本《庄子．养生主》：「彼节者有閒，而刀刃者无厚。以无厚入有閒，恢恢乎，其于游刃必有馀地矣。」后以游刃有馀比喻对于事情能胜任愉快，从容而不费力。如：「这件工作对他而言，有如庖丁解牛，游刃有馀。」也作「游刃有馀」。

重編國語辭典

  1. 技术成熟、经验丰富，而能从容不费力地完成工作、解决问题
  2. 熟练地使用刀刃

維基詞典

Entry Composition

=1 游 yóu
  1. to swim
  2. variant of 游 yóu
=1 游 yóu
  1. to walk
  2. to tour
  3. to roam
  4. to travel
2 刃 rèn edge of blade
3 有余 yǒuyú to have an abundance