南城旧梦北城新欢
[nán chéng jiù mèng bĕi chéng xīn huān]
"Nan Cheng Jiu Meng Bei Cheng Xin Xuan": This username evokes imagery of memories in the south city while finding new love or happiness in the north. It implies a contrast between past memories and new emotions, like someone looking forward to new joys after having experienced past loves.