我居北海君南海南枝向暖北枝寒
[wŏ jū bĕi hăi jūn nán hăi nán zhī xiàng nuăn bĕi zhī hán]
'I live in the North Sea, you in the South; southern branches lean towards warmth, northern ones face cold.' This is a metaphorical expression about being geographically separated yet connected emotionally, with one's situation (cold) contrasting with another's (warm).