回忆不只是是痛苦
[huí yì bù zhĭ shì shì tòng kŭ]
Recollection doesn't only bring sorrow, which implies some positivity and nostalgia towards recalling memories. It suggests that even if bad moments were experienced before, there are still warm and good memories worth being cherished, indicating the user is an optimistic people who tends to look for brightness in the past rather than focusing on pain.