nà duàn huī huáng de lì shǐ yǐ jīng zuò gǔ, xiàn zài de nián qīng rén hěn nán xiǎng xiàng

那段辉煌的历史已经作古，现在的年轻人很难想象。

That glorious history is now long gone, and it's hard for young people today to imagine.