Appreciate the characteristics of couplets in Lin Bu's Su Dong Xiao Gong from two aspects.

Dong Xiao Palace is a tourist attraction, known as a good place to become immortal, and has always been loved by hermits. This poem is lyrical, beautiful, brisk and lively: the first couplet leads to the infinity of ideas from the mountains; The second part is about the red leaves of Bijian, the green forests and white clouds, the birds singing in flowing water, and the crisp appearance of autumn without any fading; The third couplet is neat and neat, and the scenery is bright and simple; The tail is dreamy, the artistic conception is beautiful and the empty mountain is silent. Who can appreciate the charm of bananas in the night rain? Everything speaks for itself. (1)① Colorful. With the words "blue", "red", "green" and "white", a colorful painting spread out. Seeing autumn mountains and autumn waters, it is bright but not dry. 2 lively and active. The river is running, and the Woods are a little stained. This is a living scene, lively and full of vitality. ③ The contrast is strong. The stream is blue, but the red leaves flow and the trees are green, but it reflects the white clouds. (4) Dynamic and static. How hasty it is to "flow red leaves" and how leisurely it is to "point white clouds". ⑤ Pitching relative. "Bitan" is overlooking, "Green Forest" is looking up. How spacious and natural the stadium is. (2) The last couplet is intended to point out the word "Su" in the title. Although the poet didn't go to bed, he was fascinated by the artistic conception on the pillow; Rain beats banana, pillow listens to rain rhyme. How quiet and leisurely, romantic and poetic.