It is said that Li Longji, Emperor Xuanzong of the Tang Dynasty, and Yang Guifei watched peony by the agarwood pavilion in Hou Yuan. In order to remember the beautiful scenery in front of him, Li Bai was asked to write poems. At this time, the poet was drunk and not awake. Half asleep, he began to write three poems called "Qingpingdiao": Clouds desire clothes and flowers, and spring breeze blows the threshold to reveal wealth. If Yushan didn't see her, it would be Yaochi meeting under the moon. A red dew is fragrant, and the rain is heartbroken. Excuse me, who looks like Han Palace? The poor swallow relies on new cosmetics. Famous flowers fall in love and laugh like kings. Explain that the spring breeze is infinitely hateful, and the agarwood pavilion is northward. The imperial concubine of Emperor Xuanzong of the Tang Dynasty was very moved and immediately asked Li Guinian to compose music and sing for the musicians in the Liyuan. Its beautiful moment is pleasant, but only when the peony is in full bloom. Liu Yuxi and Bai Juyi, poets in the Tang Dynasty, wrote a poem: "Only peony is the true national color, and when bloom moved, the capital moved" and "bloom was crazy on the 20th".