旧人旧梦旧时空
[jiù rén jiù mèng jiù shí kōng]
'旧人' means old friends or past lovers, '旧梦' signifies old dreams, and '旧时空' implies old times or old spatiotemporal memories. The name evokes longing for things and people of the past that may never return. There’s also a hint of reminiscence and melancholy.