What is the meaning of "wind" in The Book of Songs?

"Wind" refers to the national wind.

"National Style" is the essence of The Book of Songs and a bright pearl in the treasure house of ancient literature and art in China. The folk songs of Zhou Dynasty in "National Style" reflect the real life of working people with colorful pictures, express their unfair treatment in the situation of exploitation and oppression and their belief in striving for a better life, and are the source of China's realistic poems. Some poems also describe the direct struggle between laborers and the ruling class in order to obtain the right to subsistence. In this regard, Shuo has a shocking power. There are some poems in the "national style" that reflect the great pain brought to the people by the military corvee, such as Yin, Bo and Serviceman, which are the representative works of this kind of poems. There are also many love poems of "national style". It is an important theme of this kind of love poems to reflect the great pain brought to women by unreasonable marriage and express the yearning and pursuit of young men and women for a happy marriage. Meng and Meng show us such a picture of life. And Bai Zhou also has a distinct and strong sense of resistance. Love songs with healthy and optimistic tone (such as Quiet Girl and Papaya) add a sense of harmony and joy to love poems. All these are true expressions of the thoughts and feelings of the working people. There are also many ballads satirizing and lashing the ruling class in National Wind, such as Xintai, Nanshan and Zhu Lin.