National beauty and heavenly fragrance
Basic explanation:
The original description is peony flowers whose color and fragrance are different from ordinary flowers. Later, it also described the beauty of women.
The words are explained separately:
National Beauty:
天香: 1. The reputation of fragrance. 2. Specifically refers to the fragrance of osmanthus, plum, peony and other flowers. 3. Refers to the incense used in the palace; royal incense. 4. Incense for worshiping gods and Buddhas. 5. Refers to beautiful women.