(1) all use the technique of borrowing scenery to express emotion. At the beginning, there was a bleak scene: in the autumn wind, all the trees withered and the leaves fell on Junshan: the cave and lake were full of water and sky, and the smoke was boundless. Wrote the poet's frustrated and melancholy mood. At the end, the author looks back at the distance, the sun sets and the sky is red. There are both unspeakable resentment and infinite attachment. (That's right)
(2) Meaning: I am not Yuan Er who Wei Cheng sent to Wang Wei, so don't sing "Yangguan". Here I wrote about the helplessness and indignation of being demoted.