纪念已经逝去的青春
[jì niàn yĭ jīng shì qù de qīng chūn]
In English means 'In Memory Of Youth Gone By'. With the passage of years, our vibrant days of youth seem like they passed by overnight. There's always nostalgia or sentimentality when we talk about the past good-old-days. This username conveys a sense of cherishing and missing past times and the energy of youth.