Song Yu's "Preface to Gaotang Ode": In the past, the late king tried to visit Gaotang and slept in the daytime. He dreamed of a woman and said: "I am a daughter of Wushan Mountain. I am a guest of Gaotang. I heard that you visited Gaotang and would like to recommend a pillow mat." The king was lucky and left and said: "I am in the sun of Wushan, blocked by high hills. The morning is morning clouds, and the evening is rain. Morning and evening, under the balcony."
When the emperor's daughter died, her name was the female corpse, and she turned into dew grass, her leaves were fragrant, and her flowers were yellow, like a dodder hill, and she was charming to people.
——"The Classic of Mountains and Seas·Seven Second Classics"