南城以南温暖如初北海以北半度温良
[nán chéng yĭ nán wēn nuăn rú chū bĕi hăi yĭ bĕi bàn dù wēn liáng]
Poetic way to express nostalgia and longing; South of the southern city remains warm like before while north of the northern sea only slightly mellow, depicting changes but also some things remain the same.