1. The key point of the poem is the word "hurry". The word "hurry" highlights the rapidity of the boat. The word "hurry" implicitly reveals the mentality of the person seeing off the boat, "Why is the water flowing too fast?" and highlights the sad mood of the poet when watching the boat go by.
2. The colors in the two couplets before and after this poem may seem inconsistent at first glance, but in fact they are not. The first couplet uses the bright scenery of red leaves and green mountains to contrast the farewell mood, and uses "the happy scene to express sadness", while the second couplet uses the bleak scenery of wind and rain to set off the farewell mood. This is exactly where the poet's ingenuity lies. The poet highlights the emotion of separation with his varied pen and ink.