繁华落尽只剩空城繁花落尽只余旧人
[fán huá luò jĭn zhĭ shèng kōng chéng fán huā luò jĭn zhĭ yú jiù rén]
The prosperity has faded away leaving only an empty city and past glories have waned leaving only the people of the past, expressing sadness and melancholy when the bustling world fades away.