I have a few site here that might be of some interest.
Pictures 1 which there couldn't be any doubt. Picture 3 which you will see there afro's. Now when we get to The Guti and rise of Girsu dynasty in Sumer (end of 3rd millenium) picture 1,and 2 when looking at these pictures you will see that they are bald on the head. The name Sumer come from the word Saggig which means "black heads". So if you see this man or men with bald heads then you know that they were black. Here in the United States black people have all shapes of noses, eyes (and eye colours), flat, big booty (lol), tall, small, light, dark, thin lipped, big lipped. You cant judge by the features along but you can see it in some of the art.

http://www.hp.uab.edu/image_archive/ue/ueg.html

Please review above site before going further. This other link is pictures as well.

http://www.jlc.net/~brian/art/fertile_crescent.html

Now one of the reason for asking the question about the Chinese is because of this site that I had found.

http://www.csun.edu/~ms44278/migrate.htm

P.S it a small world, I was talking to you over at the political palace.