凉情姑娘百毒不侵凉薄少年埋葬空城
[liáng qíng gū niáng băi dú bù qīn liáng bó shăo nián mái zàng kōng chéng]
Refers to two people with cold feelings: A girl impervious to harm from poisons or pains of life and a cold-hearted youth who buried his past love experiences in the emptiness like a deserted city.