人来人往又是一年花开花落又是一季
[rén lái rén wăng yòu shì yī nián huā kāi huā luò yòu shì yī jì]
'As People Come and Go, Another Year Passes, As Flowers Bloom and Fall, Another Season Arrives,' highlighting the constant change and continuity of life, including relationships blooming and fading like seasons.