批郤导窽

批郤导窽 (pīxì-dǎokuǎn)

1. 《庄子·养生主》:“依乎天理,批大郤,导大窽,因其固然。”在骨头接合的地方批开,没有骨头的地方则就势分解。比喻抓住关键,事情就能顺利解决 make penetrating criticism(like carving joints by skillful butcher);hit the nail on the head