世纪末我们都苍老公元前我们还年轻
[shì jì mò wŏ men dōu cāng lăo gōng yuán qián wŏ men hái nián qīng]
A philosophical reflection comparing aging and youth across time periods. It implies that no matter the era, everyone ages from young to old. There's a sense of nostalgia for lost time.