南柚情书北柚恋人
[nán yòu qíng shū bĕi yòu liàn rén]
'Southern Pomelo Love Letter Northern Pomelo Lover' implies an intricate play on words, where two locations are used alongside similar terms pomelo (柚) creating an effect like saying 'My love letter comes from the south and my lover from the north, both associated metaphorically through fruit names.'