Expert Costume Design
One of the most interesting features of the Iron Man 3 trailer, other than how it referenced the hardships that the Avengers went through in saving New York, was this frame. For a brief moment, we get to see a tattoo on the back of Mandarin’s neck, which closely resembles the Captain’s shield.
Also, you might have noticed that Mandarin is wearing rings on his right hand, not unlike those that belonged to Raza in the original Iron Man. This would indicate that the Ten Rings and Mandarin are in cahoots, even though the movie didn’t follow through with their relationship.