故人已走请别挽留
[gù rén yĭ zŏu qĭng bié wăn liú]
It translates into 'Old friends are gone, please do not try to retain'. The meaning expresses acceptance of parting ways and an advice not to hold onto the things that are inevitably fading away. Maybe there’s some pain, but also understanding and liberation, implying a mature attitude towards separation in life.