何妨扬眉淡笑只鸢旧故人
[hé fáng yáng méi dàn xiào zhĭ yuān jiù gù rén]
A poetic way to say 'Why not smile proudly as if meeting an old friend?'. It may refer to a serene, nonchalant attitude when facing things from the past. 'Yuan' (鸳), short for mandarin duck, symbolizes good marriage/loyalty; while this phrase itself might carry a hint of melancholy for the changes over time.