细水长流无奈海市蜃楼
[xì shuĭ zhăng liú wú nài hăi shì shèn lóu]
Trickle Flow Endlessly While Powerless Before Mirage-Like Illusions. It conveys feelings about the constancy of ordinary lives in contrast to unreachable dreams, mirages represent fleeting beauty or illusions far from grasp.