陌然浅笑只是曾经流年消逝只是过去
[mò rán qiăn xiào zhĭ shì céng jīng liú nián xiāo shì zhĭ shì guò qù]
'A faint smile, just from the past; fleeting years gone by.' This username suggests reminiscing about old times and accepting that the past has passed, with a tinge of nostalgia but also a light, detached sentiment toward previous experiences.