朔世一曲经千年
[shuò shì yī qŭ jīng qiān nián]
This username combines 'Shuo Shi' (meaning the beginning world or turning over the ages), 'yi qu' (one song), 'jing qian nian' (spanning a thousand years). It suggests that the user sees their story as lasting a long time and has a significant and profound meaning in the history.