Romance Of The Three Kingdoms, Xiliang Hegemony.

Liangzhou, where Han, Hu, and Qing people mix, the folk customs are fierce, where men carry swords and spears and wear bows and arrows. Herdsmen follow their flocks of sheep and herds of cattle grazing in the open prairie, while the horse gallops into the sunset and the eagle guards the sky.

(A reincarnation story set in the Eastern Han Dynasty, more inclined to history than the fictional novel the romance of the three kingdoms.)