你是海却不为我蓝
[nĭ shì hăi què bù wéi wŏ lán]
This poetic expression, which translates to 'You Are The Sea But Not Blue For Me,' uses metaphorical language to describe feelings of distance, isolation, or unreciprocated emotions, expressing a yearning for deeper connection despite someone being vast like the sea, but not caring for the speaker.