Correct

无坚不摧

/ wú jiān bù cuī /
Strokes

Definition

no stronghold one cannot overcome (idiom); to conquer every obstacle/nothing one can't do/to carry everything before one

Example

Definition

be capable of destroying any stronghold; overrun all fortifications; overcome all obstacles; carry all before one; be all-conquering

1
men
我们
de
jūnduì
军队
xiǎnshì
显示
le
jiāncuī
无坚不摧
de
zhàndòu
战斗力
  

Our army displayed invincible military strength.