The Sung Document is a work of a Chinese author circa 1178. Its importance lies in the claim that the land it describes as being reached by Muslim sailors, "Mu-Lan-Pi", is in fact the Americas (it has also been specifically associated with the area now known as California).
If the identification is correct then this document provides one of the earliest records written evidence of travel from the Eurasian continent to the Americas. However, it should be noted that the identification of Mu-Lan-Pi with America is still very doubtful.
