原谅我心如蛇蝎百毒不侵
[yuán liàng wŏ xīn rú shé xiē băi dú bù qīn]
It says 'forgive me as I have a heart cold and calculating like snake venom and immune to hurt' - an ironic self-depiction showing strength against vulnerabilities while asking forgiveness, perhaps from someone accustomed to protecting themselves emotionally at all costs.