你刀枪不入坚强给狗看
[nĭ dāo qiāng bù rù jiān qiáng jĭ gŏu kàn]
A sarcastic expression implying toughness, as though presenting oneself to be impervious to weapons ('not even bothered by knives or bullets')—but directed towards someone seen as insignificant (represented by 'dog'). This is a provocative and edgy way of asserting one's invincibility or resilience.