半世浮沉
[bàn shì fú chén]
"Sinking and Floating for Half a Lifetime" expresses how a person goes through changes of life and sees rise and fall over a relatively long period. Just like drifting aimlessly on the sea, encountering all sorts of challenges. This kind of experience makes one feel deep down after experiencing a lot. It may carry feelings of sighs and reminiscences for the passage of time, as well as an open-minded understanding of everything happening around them.