Mishima spring, deep clouds and warm winds, nine places, full moon and bright moon, and many explanations of ancient China.
The three fairy Islands (Penglai, Yingzhou, Abbot) have deep spring scenery, mild breath, cold heights and bright moon in the sky.
Here, Fairy Island Nine should all be metaphors of Kyoto Palace, because Nine is far from the sky, so it is generally a metaphor of a good place.