1, artistic value. Yan Song's calligraphy works have a unique style and charm, with vigorous fonts, smooth charm, rigorous composition and delicate brushwork, which is known as a neat style. His calligraphy works have high artistic appreciation value and collection value.
2. Historical value. Yan Song was an important politician and cultural celebrity in Ming Dynasty. His calligraphy works reflect historical information such as social culture, political background and character style at that time, which has high historical value and research value.