长安一梦凉了心
[zhăng ān yī mèng liáng le xīn]
"Chang an yi meng liang le xin" means 'The Dream In Chang’an(ancient Chinese Capital city has chilled the heart)', signifying deep sadness or disappointment, usually from something that has left one disillusioned or disheartened. This can be romantic and poetic imagery derived from ancient Chinese culture or literature.