旧梦难回南寒之海
[jiù mèng nán huí nán hán zhī hăi]
'Dreams Hard to Recall from the South Cold Sea' conveys nostalgia and melancholy. It's a poetic way to describe memories that are distant and elusive, like trying to recapture dreams that fade as one wakes, with an added layer of emotional coldness or unattainability.