lìjīng cāngsāng zhīhòu, tā biànde yuánhuá shìgù, shīqùle niánqīng shí de shuàizhēn

历经沧桑之后，他变得圆滑世故，失去了年轻时的率真。

After experiencing many hardships, he became smooth and cynical, losing the frankness of his youth.