长安陌路成过往
[zhăng ān mò lù chéng guò wăng]
This username evokes a sense of nostalgia and reflection. 'Changan' refers to the ancient capital of China, now known as Xi'an, symbolizing history and civilization. The phrase can be understood as past experiences turning into bygone events in the long river of time, hinting at the user's sentiment about parting ways and moving forward.