柠檬加醋唯我心酸薄荷加冰唯我心凉
[níng méng jiā cù wéi wŏ xīn suān bó hé jiā bīng wéi wŏ xīn liáng]
This phrase translates to 'lemons plus vinegar make me feel heartburn; mint plus ice chills my heart'. It describes emotional distress and feelings of loneliness where one feels pain and emptiness inside despite external factors.