夏雨初晴浅殇莫忆
[xià yŭ chū qíng qiăn shāng mò yì]
The phrase can be interpreted as “Don't Remember the Slight Sorrow after Summer Rain Clears”. Here the user is expressing melancholy associated with the transient nature of happiness and the inevitability of sadness. There is also an urge to not dwell too much on past pain once good things pass.