The font of the poem is seal script, and later generations call this writing on the stone drum "Shi Guwen". Shi Guwen's fonts are of great value. They inherited the inscriptions of the Western Zhou Dynasty and inspired the Qin seal script. Every pen that is folded horizontally and vertically is contained in the circle, and the pen is drawn vertically at the turning point and gradually extended downward. Its momentum is rough and clear, and it does have the powerful hegemonic momentum of the Qin Dynasty. However, it tends to be square and wide, and the head and tail of the pen are Tibetan fronts, which are round and muddy, with a long knot and moderate symmetry. The ancient Mao Xiongxiu is the crown of ancient and modern times.
Shi Guwen, the master of the big seal script, created the small seal script, which plays a connecting role in the history of calligraphy. Shi Guwen was regarded as an important model of learning seal script by calligraphers in past dynasties, and was praised as "the first rule of calligraphers".