A new theory by Hong Kong-based researcher Angelo Paratico states that the Mona Lisa might be a portrait of Leonardo Da Vinci's Chinese mother. The theory also speculates that Da Vinci's mom was possibly a Chinese slave. 

This theory is carried out in Paratico's new book, called Leonardo Da Vinci: A Chinese Scholar Lost in Renaissance Italy, which is scheduled for release next year. 

The author said of the theory, "I am sure up to a point that Leonardo's mother was from the Orient, but to make her an oriental Chinese, we need to use a deductive method." 

There are several factors in why Paratico thinks Da Vinci was of Chinese descent, some of which include the fact that he was vegetarian, that he wrote left to right with his left hand, and that on the back side of a famous painting is a Chinese landscape.