那些一去不返的瞬间那个花开不败的夏天
[nèi xiē yī qù bù făn de shùn jiān nèi gè huā kāi bù bài de xià tiān]
Translates to 'Those fleeting moments, that endless summer where flowers never stop blooming'. The nickname reflects nostalgia and the longing for a past time full of memories that never fades. A beautiful metaphor for remembering an unrepeatable moment forever.