乱了夏末蓝了海凉了时光薄了情
[luàn le xià mò lán le hăi liáng le shí guāng bó le qíng]
Translating into 'Summer's End Disarrayed, Sea in Blue Tones, Time Turned Cool, Love Thinned Out', it expresses a mood of melancholy regarding faded relationships and passing time.