The author of this poem was deeply moved by the joy of reuniting with his old friend in Liangzhou after ten years' absence.
The first couplet summarizes the previous friendship; Couplets cover the complicated world and human feelings in this decade; Write reunion scenes with neck and tail couplets.
Writing about parties, drinking and laughing, writing about environment, appearance and mind are the main parts of the poem.
The whole poem is rigorous in structure, full of twists and turns, prominent in key points and long in rhyme.