How to distinguish the broken horses in the north from the scattered horses' hooves in the autumn wind?

According to the exclusion method, the horse neigh is broken in the north and the horseshoe is scattered in the autumn wind. According to the poem, the north wind blows off the neigh of horses, and the autumn wind blows away the hooves. This sentence should not be written by Tan Sitong, but by Nalan Xingde through exclusion. Tan Sitong didn't write related poems, and his poems are basically circulated, saying that they should be written by Nalan Xingde.