After the Emancipation Proclamation, many intermarriages in some states were not recorded and historically, Chinese American men married African American women in high proportions to their total marriage numbers due to few Chinese American women being in the United States.
Although the anti-miscegenation laws have been revoked, the social stigma related to Black interracial marriages still exists in today's society although to a much lesser degree.
For example, in 1880, the tenth US Census of Louisiana alone counted 57% of interracial marriages between these Chinese to be with black and 43% to be with white women.
It was discovered by historian Henry Louis Gates, Jr in the African American Lives documentary miniseries that NASA astronaut Mae Jemison has a significant (above 10%) genetic East Asian admixture.
Fully a quarter of black men who got married in 2013 married someone who was not black.
Only 12% of black women married outside of their race.