The song "Huaihuahai" is a classic folk song written in the dialect of "Laoxier" in eastern Hebei, which has been deeply loved by people since its creation. Its creation background: "Huailin brewed Qionghua in May, and it was full of fragrance and drunkenness. Where the blue waves of spring water fall, the fragrance floats all the way to the end of the world. "When this stretch of several kilometers of locust tree forest blooms one after another, as described in the poem, at first glance, there are thousands of trees, which have accumulated a winter fragrance, lined with green leaves covered with branches, and they look like clouds and bright as snow. On one side, there is a rolling sea of flowers, on the other side, there is a rippling sea, and the sweet scent of Sophora japonica is blowing in the wind.