There are many ancient Chinese poems lamenting the green eyes of the Han emperors.
Some accounts have Gingis Khan with red-hair and green eyes.
All the ancient skeletons in and around Urumchi were Caucasian (types) until around 100-200BC.
One day (probably after I'm dead, lol), we'll know for sure. I believe DNA will eventually tell an amazing story.
All you need for green eyes is the gene for red-hair. You do not need to actually be a red-head.
My eyes were green until surgery and then they turned blue. The recovery time is very long after such a disaster.
There are many ancient Chinese poems lamenting the green eyes of the Han emperors.
...
All the ancient skeletons in and around Urumchi were Caucasian (types) until around 100-200BC.
Urumqi's pre-Sinicization racial composition would likely not have had any bearing on that of the Han emperors, given that the Han dynasty originated in Jiangsu (which is in coastal East China), not anywhere near Urumqi (which is in far Northwest China). In fact, no imperial Chinese dynasties, including the Qin, originated west of the Hexi corridor (Dunhuang, Urumqi, Kashi etc., where the Caucasoids were, according to records both historical and archaeological).
Exactly which poems do you speak of? Perhaps those poems are referring to the rulers of the Later Zhao state, which was a short-lived kingdom formed by rebellious immigrant workers from the Caucasoid Jie ethnicity in Northern China circa 320 AD. Now those people could conceivably have had green eyes.