What are the main expressive techniques used in the whole poem "Crossing Ganquangang in Winter"? Try to make a concrete analysis according to the content of this poem.

Pass by Ganquan Inn in winter

I remember when I came to the ancient post station, my whip was tied with snow in front of the building.

Double orange fragrance splashes beauty's hand, half arm cold adds drinker's shoulder.

Suddenly, I saw the wasteland destroying the evening grass, and there was no cold smoke in the air.

The dust is full of deep melancholy, but I hope someone will send me to sleep drunk.

Speak first and then write down.