Green-eyed, northeast Asian women do exist!
When BIG TROUBLE IN LITTLE CHINA appeared, I shrugged off the green-eyed, minor character of Miao Yin as just so much science fiction. She was rarely shown in the movie anyway. Like everyone else, who would believe a 100% northeast Asian woman could have green eyes? Maybe a Eurasian woman, but that's it.
It wasn't until three years ago when I began surfing YouTube that I watched a couple of videos filmed of the Central Asian cultures that lo and behold, wow! Green-eyed, black-haired, high cheekboned Asian women do exist! See for yourself. I watched several videos showing Central Asian women doing traditional dancing. Some of those women look like Chinese or Japanese women wearing green contact lenses but they're not. The admixture of a Northeast Asian woman with startling green eyes is visually astonishing and compelling.
Why haven't some of these women shown up in the rest of the world as emigrants or expatriates? Just look at a map or a globe. Central Asia is buried so deeply in the middle of the continent that it surrounded by dominant powers, the former Soviet Union, Iran, China; geographical features like the Himalayas, and the fact that the Central Asian peoples were and still are very insular, does explain why so few of those people disseminated to the outside world.