Although the Great Xuan Dynasty successively abolished some of the old systems of the previous dynasty, it still preserved some, such as the travel permit system.0

This travel permit was for people who traveled out of their area of residence. It was an official document issued by the local government. Without a travel permit or an official badge, one would be punished according to the law.0

With the prosperity of land and sea trade and the frequent movement of people, this travel permit system should have been abolished. However, due to the rise of secret societies, the Imperial Court and the Daoist Order still retained this system to facilitate the arrest of secret society members.0

A travel permit had to be used when entering the city and staying at an inn. Without a travel permit, the inn would report the person to the local government.0

Black Robes, Green Phoenix Guards, Daoist priests, and scholars with meritorious status did...0