Literature Reference: Suddenly, like a night of spring breeze, thousands of pear trees bloom. The snow scatters into the pearl curtains, dampening the silk screens; the fox fur fails to warm, and the brocade quilt feels thin. The general's horn bow cannot be drawn, and the iron armor of the commander feels cold to wear. The vast desert is covered with a hundred feet of ice, and the gloomy clouds stretch for thousands of miles. In the central camp, wine is served to the departing guest, accompanied by the sounds of the huqin, pipa, and Qiang flute. The evening snow falls heavily at the camp gate, and the red flag, frozen by the wind, does not flutter. At the east gate of Luntai, I bid you farewell as you depart, the snow filling the mountain roads. The mountain path twists and turns, and soon you are out of sight, leaving only the horse's tracks on the snowy ground. Source from 'Bai Xue Ge Song Wu Pan Guan Gui Jing'.