During the Warring States Period, Su Qin, which advocated unity, wore the seals of the six countries. The cultural relics unearthed in recent years have pushed the history of seals forward for hundreds of years. In other words, seals existed in the Zhou Dynasty.
Most of the ancient seals handed down from ancient times came from ancient city ruins, rivers and ancient tombs. Some were abandoned by the defeated in the war in exile, while others were abandoned by the dead in the battlefield. At that time, the practice was that the engine was handed over to the seal seized on the battlefield, and officials had to take off the seal after transferring their posts and dying. Many others, such as official posts with names, auspicious seals, Xiao seals, etc. Generally, they are sacrificial offerings, not physical objects. Other pottery and standard measuring tools of the Warring States period, as well as gold coins of some vassal States, were all stamped with seals, and the names of craftsmen or symbols with icons were recorded, which were also handed down.
Ancient seal is the general name of pre-Qin seal. Most of the earliest seals we can see now are ancient seals in the Warring States period. Many features of these ancient seals are unknown to us now. Most ancient seals in Zhu Wen are equipped with wide edges. The strokes of seals are as thin as hair, and they are all cast. The ancient seal script in white language is made by adding more side bars or vertical grids in the middle, and the characters are cast and chiseled. In addition to the names of Sima and Situ, the official seal has various irregular shapes, and the content is also engraved with auspicious words and vivid objects. Most of the ancient seal characters in Zhu Wen are made by casting and chiseling characters with a border or vertical grid in the middle. In addition to the names of Sima and Situ, the official seal has various irregular shapes, and the content is also engraved with auspicious words and vivid objects.