柠檬掩饰不了心的酸簿荷掩饰不了心的凉
[níng méng yăn shì bù le xīn de suān bù hé yăn shì bù le xīn de liáng]
This translates to 'Lemon cannot mask the acidity of my heart; mint cannot cover its coldness'. The use of these items implies that even if the user attempts to hide feelings (sorrow or unkindness) through different means, those feelings still exist and come through eventually.