How many faces does Sima Yin have?

Fu Zhuan is a kind of polyhedral seal cutting by Du Fu, which is carved by exquisite coal carving and has 26 printing faces. It * * * has 26 printing faces, and consists of 18 squares and 8 triangles. The owner of the seal is Du, whose ancestral home is Yunzhong County and Xianbei nationality. His three daughters were married to the eldest daughter of the Northern Zhou Dynasty, Emperor Wendi of Sui Dynasty (seven daughters) and Li Yuan, the father of the founding emperor of Tang Dynasty (four daughters).

14 square seal, that is, official letter sparse, official letter stamped, official letter affixed, official letter printed, official seal, official seal, official letter white, official letter written.

The seal is regular script, the calligraphy is vigorous and tall, and I have a strong interest in Shu Wei. According to the content of the seal and the textual research of historical books, this seal is Du Zhiyin, a fu writer in the Northern Zhou Dynasty. Fourteen seals have different contents and uses, and are valuable physical materials for studying the seal system of the Northern Dynasties.