薄荷加冰心凉透柠檬加醋心酸透
[bó hé jiā bīng xīn liáng tòu níng méng jiā cù xīn suān tòu]
A minty heart frozen cold through; a citrus-soured heart seared by bitterness. This vivid metaphor combines refreshing and sour flavors into emotional states: cooling off passion/fear/dismay with numbness while intensifying disappointment/wounds/pain inside as if bitten by acerbic lemon juice infused in vinegar.