上行文书
上行文书-
密疏是明代臣民上呈给皇帝的一种秘密上行文书。
Secret memorials were confidential documents submitted by Ming subjects to the emperor .
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奏折从公开到秘密、从非正式文书到正式上行文书的演变过程是奏折制度规范化和法律化的过程。
The transformation of the memorial to the throne from open to secret and from unofficial to official is a process of standardization and legalization .