我已长发及腰你却早已不在
[wŏ yĭ zhăng fā jí yāo nĭ què zăo yĭ bù zài]
Translated to 'My hair has grown past my waist but you are already gone,' it describes an intensely sad longing or remorse over someone lost long ago, emphasizing changes in appearance or time elapsed while pining for what cannot be returned.