Deatil of "Portrait of a Black King" (Bronze Yu Vessel). Shang Dynasty, ancient China (1766-1022 B.C.E.). James E. Brunson (Editor). The presence of Africans in China dates back thousands of years, with evidences especially among the Xia and Shang dynasties. They left alot of their historical records on turtles shells, which are on display today in various Chinese museums in China.