Sui And Tang Official Seal

The official seals of Sui-Tang Dynasty are important data to study official system, administration division and geographical evolution. It act as a vital role in historic research.On the base of former research, the wide collection of data reach a new level in this paper. Then, dating, regulations, sealing style and historic influence are discussed in detail. At last, new conclusion is drawn.The official seal, even its shape, regulation and sealing style, are found obviously a junction and creation.A series of regulation had affected both the later official seal system and neighbouring countries.