Whose poem is "Yanshan snowflakes are as big as seats, and pieces blow down Xuanyuantai", which describes the snow scene in the north or the south?

This is Li Bai's famous sentence describing snowflakes. The Yanshan Mountains are located in the southeast of Jixian County, Hebei Province, generally referring to the north of China. Xuanyuantai site is located in Qiao Shan Mountain, Huailai County, Hebei Province. It is said in the sentence that "the snow is as big as a seat", which is a high artistic exaggeration, but it is a fact. Just as Lu Xun said in the article "Talking about Comics": "Yanshan Snowflakes are as big as seats" is exaggerated, but Yanshan is a little frank, so we can know at once that Yanshan was so cold. If the snow in Guangzhou is as heavy as one seat, it will be a joke. "