封泥作为封缄方式是战国、秦汉时代的普遍现象。根据近世的研究,当时官方文书、对象递送与储存,多系以封检抑印于泥,作为凭据与标识。送达收受者则有专人记录签署,形成了完整的制度。今天见到的古代封泥,是当时官署集中弃置并焚烧封检(简)的部分遗存。可以推知:更多的封泥由于自然环境等遗存条件的不同和销毁方式的差异,已经不复存在。据现场观察者告知,有些封泥出土时尚存字迹,瞬间消散。故现存封泥多为经火焚而固化者。据初步统计,目前战国、秦汉封 Sealing mud as a sealing method is a common phenomenon in the Warring States and Qin and Han dynasties. According to recent studies, at that time, the official documents and objects were delivered and stored, most of which were sealed and sealed in mud as identification and identification. Service recipients have signed records, formed a complete system. The ancient seal that I saw today was part of the remains of the centralized collection and incineration of the official seal at the time. It can be inferred that more muds no longer exist because of the differences in the surviving conditions such as the natural environment and the destruction methods. According to observers on the scene told that some clay seal unearthed fashion, instantly dissipated. Therefore, most of the existing sealing mud is burned and cured. According to preliminary statistics, the current Warring States, Qin and Han letters