2. It's novel and true to turn the inner abstract thoughts into concrete and sensible actions, which just expresses the poet's desire to see his daughter.
3. The first section uses "I walked through the forest, I walked through the mountain" to show the distance and urgency of the road; The second section uses "unheard of, seen and not seen" to express inner singleness; In the third section, the poet's persistence is expressed by "don't look at the far sail, don't look at the rosy clouds", so the eager, persistent and single-minded yearning is sincerely expressed.