Metaphor, use "eyebrow peak" and "eye wave" to compare mountains and rivers. "Eye-catching" refers to weeping and frowning when "eyebrows gather", which is used to describe the natural landscape seen at the farewell and reflect the poet's deep affection and touching feelings for the farewell.
Meaning: Two floors, which not only refer to the beautiful scenery of eastern Zhejiang that friends have been to, but also depict their deep affection when they say goodbye, showing their deep affection for friends. The beauty of this poem is that it is a pun and integrated.