洋葱催泪因你剥他心
[yáng cōng cuī lèi yīn nĭ bō tā xīn]
A metaphorical and emotional description indicating that peeling an onion leads to tears due to its pungency, much like feeling heartbroken or getting wounded when deeply hurt. 'He' here refers metaphorically to 'someone else's'. The individual is implying they are suffering due to actions taken by another.