1. The creative background is different: Pear Flower Fragrance is the theme song of the movie "Perfect Beauty", sung by Chris Lee, and Frost Snow Millennium is the original Vocaloid song of Tianyi Luo and Lezheng Ling.
2. The lyrics are different: Pear flower fragrance mainly describes the beauty and fragrance of pear flowers, while Frost Snow Millennium tells the history, scenery, emotion and other aspects.
3. Different musical styles: Pear Flower Fragrance is a popular song, and its musical style is more relaxed and lively, while Frost Snow Millennium's musical style is more lyrical and deep.
4. Different singers: Pear Flower Fragrance is sung by Chris Lee, while Frost Snow Millennium is sung by Tianyi Luo and Lezheng Ling.