The first two sentences, "Thousands of miles away in Huang Yun, the white sky is shining, and the north wind is blowing geese and snow one after another", write the scene in front of you simply and clearly (if you want to clearly describe what kind of scenery this is, you must pay attention to the adjectives in the poem, such as yellow and white). This sentence is mainly written like this: Yellow sand and Li Qian, boundless, the north wind whistling, even the clouds are dyed yellow by sand, covering the sun and making it.
The first two sentences are written directly in front of the scene, using pure line drawing. Write his inner loneliness and nostalgia with sad and tragic scenes. Parting from love is more profound against this scene.