笼子里的鸟终究孤单
[lŏng zi lĭ de niăo zhōng jiū gū dān]
The bird in a cage remains lonely at the end,' metaphorically represents freedom sought against confinement, loneliness felt even within comfort, or longing for escape from situations deemed imprisoning. It conveys themes of restriction, yearning for liberty, and inevitable solitariness.