笑着回忆我们的过去
[xiào zhe huí yì wŏ men de guò qù]
Directly translating to 'Laughing at the Memories of Our Past'('笑着回忆我们的过去' - Xiao Zhao Hui Yi Wo Men De Guo Qu), the nickname owner might look back at past experiences with nostalgia or even find humor in old times now, emphasizing positivity towards the recollection of memories.