曾经再美好也只是曾经
[céng jīng zài mĕi hăo yĕ zhĭ shì céng jīng]
The name reflects a sense of reminiscence and resignation: it acknowledges the past with its beauty and good moments, while emphasizing that these can only exist as memories. The user might be looking back at some sweet recollections in life or love that have passed, with a mood of cherishing the past and being calm about the present situation.