千年一梦终须醒
[qiān nián yī mèng zhōng xū xĭng]
Translated literally, this phrase means 'A dream from a thousand years will ultimately come to an end'. The underlying context reflects some sense of impermanence: no matter how beautiful a dream, eventually one must wake up from it. This user probably thinks deeply and is quite rational when facing problems. Perhaps there has been something in their heart for thousands of days which finally ended at some point.