《淮南子·览冥训》
以前师旷不得已而为晋平公演奏《白雪》乐曲，神物玄鹤被感召而从天降临，狂风暴雨骤然发作，晋平公因此得了重病，晋国还因此大旱，赤地三年。
昔者师旷奏白雪之音，而神物为之下降，风雨暴至，平公癃病，晋国赤地。
In the past, Shi Kuang had no choice but to play the "White Snow" music for Duke Ping of Jin. The divine object, the mysterious crane, was summoned and descended from the sky, causing a sudden torrential storm. Duke Ping of Jin became seriously ill, and Jin State suffered a severe drought for three years.