Where did you get that that Han was black. Can cite your reference ?
"While Genesis 9 never says that Ham was black, he became associated with black skin, through
folk etymology deriving his name from a similar, but actually unconnected, word meaning "dark" or "brown".
[37] The next stage are certain fables according to ancient Jewish traditions. According to one legend preserved in the Babylonian
Talmud, God cursed Ham because he broke a prohibition on sex aboard
the ark and "was smitten in his skin";
[38] according to another, Noah cursed him because he castrated his father.
[39] Although the Talmud refers only to Ham, the version brought in a
midrash goes on further to say "Ham, that
Cush came from him" in reference to the blackness,
[40] that the curse did not apply to all of Ham but only to his eldest son Cush,
Cush being a sub-Saharan African.
[41] Thus, two distinct traditions existed, one explaining dark skin as the result of a curse on Ham, the other explaining slavery by the separate curse on Canaan.
[42]"----
https://en.wikipedia.org/wiki/Curse_of_Ham