你刀枪不入我百毒不侵
[nĭ dāo qiāng bù rù wŏ băi dú bù qīn]
This phrase 'You Are Invincible To Weapons While I Am Immune to All Poisons' metaphorically speaks of two resilient states—one being impenetrable like armor (resistant to harm), and the other immune to any form of negativity, deceit, and toxicity—demonstrating the toughness and unshakeability of two different individuals.