笑着看我们曾经的回忆哭着看我们曾经的照片
[xiào zhe kàn wŏ men céng jīng de huí yì kū zhe kàn wŏ men céng jīng de zhào piàn]
A bittersweet feeling, smiling while reminiscing the past but crying when revisiting old photos. This reflects nostalgia and mixed emotions about the past.