从此百毒不侵以后刀枪不入
[cóng cĭ băi dú bù qīn yĭ hòu dāo qiāng bù rù]
Expressing resilience - being immune to harm. It implies becoming so strong that nothing can hurt you emotionally or physically, a state one enters as a result of previous experiences. A metaphorical statement about growing stronger after going through difficulties.