1, with different meanings: Yan Fang Fei refers to the euphemistic sound of swallows singing in spring, refers to the fragrance of flowers and plants, and refers to the fragrance of flowers and plants. If the heart is wild, it means that the mood and spirit are as beautiful as the fragrance of flowers and plants, which is mostly used by women.
2. Different usage: Yan is used to describe the beautiful scene of spring, and Xin Ruofang is used to describe the beautiful temperament of women.
3. Different scope of application: Yan is suitable for describing spring and natural scenery, while Fei is suitable for describing the beauty and temperament of women.