What does clear autumn mean in Ma's poems?

Clear Autumn In the desert of Ma Shi, sand, like snow, means clear autumn. Ma Shi Sha Ru Xue is a five-character quatrain written by Li He, a poet in the middle Tang Dynasty. The whole poem: the desert sand is like snow, and the Yanshan moon is like a hook. Don't be a golden brain, go and step on the clear autumn. The vast desert, such as Wan Li snow cover and crescent moon, hangs on Yanran Mountain. When can I gallop forward in the crisp autumn with gold ornaments?

This poem first describes the frontier fortress battlefield scenery with distinctive features, and uses rhetorical devices such as metaphor and duality to describe a frontier fortress scenery map, showing its broad and sad characteristics. Then, the poet uses metonymy to express his feelings for horses and his desire to make contributions without being appreciated. By chanting, praising or lamenting the fate of horses, the whole poem expresses the genius, lofty aspirations, feelings and resentment of people with lofty ideals, and its expression method belongs to metaphor. However, this poem has unique significance in the use of metaphor.