2 sentences for 刀枪不入 (dāo​qiāng​bù​rù)

1. 义和团声称自己刀枪不入。

   Yì​hé​tuán shēng​chēng zì​jǐ dāo​qiāng​bù​rù.

   The Boxers claimed to be invulnerable to swords and spears.

   Source: Dong Chinese Dictionary

2. 他已经到了刀枪不入的境界，随你怎么骂他都无动于衷。

   tā yǐ​jīng dào le dāo​qiāng​bù​rù de jìng​jiè, suí nǐ zěn​me mà tā dōu wú​dòng​yú​zhōng.

   He has reached a state of being completely thick-skinned; he remains indifferent no matter how you scold him.

   Source: Dong Chinese Dictionary