待你长发及腰少年早已走远
[dài nĭ zhăng fā jí yāo shăo nián zăo yĭ zŏu yuăn]
Waiting for your long hair to reach your waist, yet the boy has already gone far. This implies a sense of longing and regret about lost love or missed opportunity. The user may have nostalgia for past relationships.