Mud seal, also known as mud seal and artistic mud, is a kind of dry and hard mud mass covered with ancient seals, which is used as proof of ancient sealed official documents, letters and articles to prevent unauthorized disassembly.
The production process of sealing mud is to bind the articles or slips or documents that need to be preserved or sealed for transportation with ropes or bags, then seal the knots or seals with cement, press the public and private seals on the clay, and bake the clay until it is hard. This can play the role of confidentiality.
Mud seal in Qin dynasty
The 78 1 pipa of Qin dynasty collected by China Calligraphy Art Museum in Xi 'an were all unearthed in Xiangjia Lane in the northern suburb of Xi 'an in 1995, covering three aspects: three public houses, nine courtyards, county halls and palace gardens. Among them, five pieces, such as Right Prime Seal, Tingwei Seal and West Salt Seal, are national first-class cultural relics.
There are "Imperial Seal" and "Imperial Seal" in the seals of the Qin Dynasty. In the past, many scholars thought that the duty of the censor was to "supervise and assist the prime minister in handling political affairs", but Qin and bamboo slips and other materials show that this statement needs to be revised and supplemented. The duties of the imperial censor in Qin Dynasty also included checking laws and regulations, going out to perform official duties, inquiring government documents, managing county prisons, and managing prisoners.