痛不过心你伤的不够深
[tòng bù guò xīn nĭ shāng de bù gòu shēn]
This conveys a message of emotional endurance, implying that physical pain can't compare to heartache, and the lack of deep emotional damage reflects either resilience or the insufficiency of another person's hurtful actions. Essentially, it means you can handle any hurt because what they've done hasn't really touched you deeply.