A touch of the setting sun means that the afterglow of the setting sun shines on the wall, like a layer of muddy light. Looking at the afterglow, it adds a sadness. The afterglow of the setting sun reflects the western sky, as if wiping the setting sun on the western sky. It can express sad scenes or bleak autumn scenery.

Original sentence: strengthen the black veil on the castle peak. Returning to the wild goose for the autumn, tired guests are homesick. Cuixiu Qin, Jinbei San, Jade Hand Pipa. When people get old, the west wind will turn gray, and butterflies will worry about the future. Looking back at the horizon, watching the sunset and counting Western jackdaw in the west. From Zhang Kejiu's Nine Days Guild in Yuan Dynasty.

Facing the castle peak, I managed to sort out the black veil on my head, and the returning geese crossed the autumn sky, and the sleepy wanderer missed his hometown. Recalling Cui Xiu's diligent persuasion of wine, the golden cups are scattered frequently, and the jade hand plays the pipa. People who are whispering in the west wind are old and white-haired, and Jade Butterfly is worried about flying tomorrow. Looking back at the vast horizon, I saw a touch of sunset, and several western Western jackdaw flew into the distance.