↑ Guo, Shirong; Feng, Lisheng (1997). “Chinese Minorities”. Trong Selin, Helaine. Encyclopaedia of the history of science, technology and medicine in non-western cultures. Dordrecht: Kluwer. tr. 197. ISBN978-0-79234066-9. During the Warring Stares (475 BC–221 BC), feudalism was developed and the Huaxia nationality grew out of the Xia, Shang, and Zhou nationalities in the middle and upper reaches of the Yellow River. The Han evolved from the Huaxia.