摧枯拉朽 [－－－－]

Jyutping ceoi1 fu1 laai1 nau2
Pinyin cuī kū lā xiǔ

Definitions (CC-CANTO)
  1. to describe something that can easily be destroyed as it is already in ruins
Definitions (Wiktionary)
  1. phrase, idiomatic
    easily destroyed or crushed