一百毒不侵也会万箭穿心
[yī băi dú bù qīn yĕ huì wàn jiàn chuān xīn]
'一百毒不侵也会万箭穿心' (Even being impervious to a hundred poisons can be pierced by myriad arrows) evokes the notion of someone having experienced numerous adversities yet ultimately still feeling profound pain and suffering. This implies that no matter how strong or resilient a person thinks they are, emotional vulnerabilities can always find a way to hurt them deeply.