当时黄梁梦
[dāng shí huáng liáng mèng]
'Huang Liang Dream' refers to a dream about achieving great success or experiencing wonderful events but only realizing its illusory nature after one awakens. The term derives from a classical Chinese story in which a scholar named Lu Sheng dreamed of attaining wealth, status, only to awake later to find his reality remains bleak. This username might be expressing the futility and temporary nature of past ambitions and aspirations.