你是忘不掉的伤就刻在心脏
[nĭ shì wàng bù diào de shāng jiù kè zài xīn zàng]
Translating to 'You are an unforgettable wound etched into my heart,' it expresses deep emotional scars from a person or event that can never be fully healed or forgotten, symbolizing lasting impact on one's emotions and memories.