nián / qīng / shí / de / fán / nǎo / rú / jīn / huí / tóu / kàn / bú / guò / shì / guò / yǎn / yān / yún

年轻时的烦恼，如今回头看不过是过眼烟云。

The troubles of youth seem ephemeral when I look back on them now.