你是柠檬酸到心痛
[nĭ shì níng méng suān dào xīn tòng]
'Ni Shi NIngmeng Suan Dao Xin Tong' stands for 'You are lemon sour till heartache', it describes that something or somebody makes oneself so sour like having lemons that it even hurts his or her heart, indicating an intense yet painful emotion probably from disappointment or hurtful experiences.