回忆尽头的青橘酸
[huí yì jĭn tóu de qīng jú suān]
This internet name 'Youth at the End of Memories' conveys a bittersweet emotion. The green orange is used as a metaphor for young, unripened experiences that leave behind an astringent feeling, much like the reminiscence of youth in its raw and poignant nature, hinting that there's a kind of heart-stirring nostalgia in memories, especially about those days or experiences that haven't had enough time to fully develop into sweet ones, but are remembered as beautiful, even though there might be some regrets and sorrows.