日光再倾城也暖和不了人心
[rì guāng zài qīng chéng yĕ nuăn hé bù le rén xīn]
Even when daylight shines brightly over a beautiful place it doesn't warm the heart if the person is in despair. This portrays a state of mind that no matter the beautiful things around them cannot make them happy, reflecting emotional detachment despite surroundings.