她不是钻石却光芒万丈他不是太阳却温暖心脏
[tā bù shì zuàn shí què guāng máng wàn zhàng tā bù shì tài yáng què wēn nuăn xīn zàng]
Translated as 'She is not a diamond but radiates brightly, He is not the sun but warms the heart'. The username uses metaphor comparing someone to non-traditional sources of light and warmth. The implication is someone who may be unconventional yet profoundly impactful and emotionally significant to the user.