I'll see what I can find. I have a theory that there are probably some pictures of Hakka Chinese (or Korean/Japanese relatives of the Hakka) in ancient art, but perhaps not identified as Hakka, so perhaps going through some ancient paintings or murals or something like that might turn up some pictures. I'd also like to see photos of their modern descendants, so if you come across any of those please let me know.
PRE-COLUMBIAN ART IN AMERICA SUGGESTS PREHISTORIC OLD WORLD CONTACTS
Look at the mustache on this guy.