What is the scene written in the first two couplets of the climbing poem?

The first couplet, "The sky is full of wind, the apes crow and the birds return, the blue lake and white sand", reflects the poet's complex and deep feelings. The poet chose six images, such as the chilly autumn wind, the empty sky, the shrill ape, the bleak river, the white beach and the dancing birds, and painted a sad picture for us. In particular, the two details of "mourning for apes" and "birds flying back" seem to be the poet's pouring out his endless complex feelings about his old illness and loneliness, and it also seems to be a true and vivid portrayal of thousands of long-term wandering and displaced people, including poets. A few words set a sad and solemn lyric tone for the whole poem. The couplets of "fallen leaves are like waterfalls, and I see the long river running" reflect the typical characteristics of late autumn. It is the poet's hope that the falling wood is boundless and rustling down; The river is rushing and rolling away, which is overlooked by the poet. There is a "rustling" sound and a "rolling" trend, which makes people feel that the whole picture is full of weather, desolate and tragic, magnificent and far-reaching More importantly, from here, we seem to feel the poet's hard-working and helpless pain in the face of the dead, lamenting that time flies and life is short. The gloomy and sad antithesis vividly describes the poet's life situation of "bitterness, bitterness and hatred", and the language is accurate and magnificent. It is not an exaggeration for predecessors to praise it as "a unique step in ancient and modern times". The last four sentences express the feelings of climbing mountains and the difficult situation of illness and depression. The poet has been wandering for a long time, and now he is old, weak and ill. Even though I have a lot of bitterness and hatred, I will drown my sorrows in wine. It's a pity that I quit drinking because of illness, but I have a cup to raise. At this moment, the poet's sadness can be imagined. "I have come to three thousand miles away. This autumn's sorrow, a hundred years' sorrow, I climb this high alone "further clarifies the feelings contained in the above two couplets, and shows the poet's melancholy when he is worried about the country and hurts the country in time and space: one is that he is sad and wandering, and Wan Li is away from his hometown; Two sad late autumn bleak, desolate and magnificent; Life is short and moody; Four sorrows travel to other places and visit other places; Five sad old people climb mountains, unable to do so; Six sorrows are weak and sick, and the situation is difficult; Seven worries about loneliness are hard to send ... The neat and rigorous confrontation is full of the poet's endless travel worries like fallen leaves, and the poet's endless loneliness and hatred like a river, which makes us deeply feel the pulse of Du Fu's heavy beating feelings and the strong voice of the times! The antithetical couplet "Bad luck has laid a bitter frost on my temples, and heartache and fatigue are a thick dust in my wine", the poet's hardship and poverty, national tragedy and family worries make him more and more white-haired and miserable, and he wants to drown his sorrows in wine, but it is more difficult to drown his sorrows because of illness, which adds a layer of deep melancholy and helpless sigh to the poet. Here, the poet attributed his poverty to the difficulties of the times, and expressed his feelings of worrying about the country and the people incisively and vividly.