How does Du Fu's poem Sunset express his complex feelings?

The deeper the night, the quieter people are. The poet looked at autumn scenery, a mountain village with homesickness, as if it were covered with a layer of cold color: "The stone spring flows into the dark wall, and the grass dew drops into the autumn roots". The word order of these two sentences is deliberately misplaced. The original sentence sequence should be: "dark spring flows on the stone wall, and autumn dew drops on the grass roots." It means that the cold moonlight is scattered all over the mountains and rivers, the deep spring water is gurgling on the stone wall, and the dew on the autumn night is condensed on the grass roots, crystal clear. How sad and clean the artistic conception is! Give people a feeling of sadness and depression. The dislocation of word order not only makes the tone more sonorous and harmonious, but also highlights the "stone spring" and "grass dew", which makes the poems expressed by "flowing dark walls" and "dripping autumn roots" more peculiar and rich. From the lonely and quiet night scene, a feeling of dying is faintly revealed.