城南以北慕他心城北以南我爱她
[chéng nán yĭ bĕi mù tā xīn chéng bĕi yĭ nán wŏ ài tā]
A poetic expression that can be loosely translated as 'north of the southern city I admire his heart, south of the northern city I love her'. It implies admiring or loving people across boundaries or distances.