回头望断天涯你却不在
[huí tóu wàng duàn tiān yá nĭ què bù zài]
Means 'turn back and gaze to the horizon but you're not there' implying longing and sadness over losing or parting ways with loved ones. Expresses bittersweet memories as if they belong far out beyond reach, often connected to themes such as separation or absence.