南城以南温暖如初北海以北半度微凉
[nán chéng yĭ nán wēn nuăn rú chū bĕi hăi yĭ bĕi bàn dù wēi liáng]
Describing warmth in areas south of the southern city and a slight chill in places north of the northern sea, it uses contrasting temperatures to represent different moods, environments, or stages in a relationship, symbolizing warmth and changes over time.