"Guizhixiang is interesting in the air" comes from the Tang Dynasty poet Bai Juyi's "Guizhixiang Jinling Nostalgia". It is a unique artistic conception and emotion expressed by the poet when describing autumn scenery in Jinling (now Nanjing).
In this poem, "emptiness" not only refers to the clear and lofty sky in autumn, but also symbolizes the clarity and tranquility of the poet's heart; "Interest" expresses the poet's profound understanding and unique views on life and history. Guizhixiang adds a touch of fragrance to the whole poem through the image of osmanthus, which makes the whole poem more emotional.