用矛头扎在你心
[yòng máo tóu zhā zài nĭ xīn]
'用矛头扎在你心' means 'stabbing your heart with a spear.' It's an evocative way of saying someone feels hurt or that they intend to hurt others with words or actions. The nickname could suggest emotional pain, anger, resentment or the will to seek vengeance towards someone who broke their heart.