安然失笑旧梦失词
[ān rán shī xiào jiù mèng shī cí]
'An Ran Shi Xiao Jiu Meng Shi Ci' roughly translates to laughing calmly at lost memories which can't be retold. This may indicate that the netizen chooses to respond to past events with a relaxed attitude and is perhaps not willing or unable to speak about certain things in the past, possibly due to the passage of time.