黄粱美梦
[huáng liáng mĕi mèng]
Based on a classical Chinese fable, where 'Yellow Millet' refers to an unrealistic dream of wealth and power experienced in just one night's nap, only shattered upon waking up. It suggests ambition and aspirations might end abruptly, reminding one not to lose oneself in fantasies but remain down-to-earth.