Imperial passport of Kublai Khan “I am the emissary of the Khan. If you defy me, you die.” (This is one of two known passports).

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Paiza

A paiza or paizi or gerege (Middle Mongolian: Гэрэгэ, Mongolian: Пайз, Persian: پایزه‎ pāiza, Chinese: 牌子 páizi) was a tablet carried by Mongol officials and envoys to signify certain privileges and authority. They enabled Mongol nobles and officials to demand goods and services from civilian populations.