梦醒了才知道是梦
[mèng xĭng le cái zhī dào shì mèng]
'Only after waking up from the dream did I realize it was a dream.' This online name indicates someone who, after an experience of illusion or fantasy has ended, realized it was just that. It can express post-dream emptiness, a sense of loss when something nice ends, and disillusionment.