What do you mean by falling frost and leaves?

Dispersed as frosty deciduous wind, refers to frosty deciduous wind. Huang Tingjian wrote a poem in a bitter summer: "Bamboo can sing underwater dragons, and jade people should be in the moonlight." When the autumn air is hot, it will be scattered as frost, snow and fallen leaves. "Tells the story of the sultry summer.

The interpretation of the whole poem is: the bamboo flute is melodious, the sound seems to penetrate underwater, and Youlong under the pool sings along with it. This association makes people feel a little cold, even the piper seems to belong to Guanghan Palace. This situation makes people in the valley feel that when will it be possible to wash away the summer heat and turn it into a frosty autumn wind?