Huns were in the phase of formation of ethnic and passionate lift. The terms "host" and "people" have coincided. Therefore, from 202 to 57 BC. e. numerically small but heroic Hun Han restrained aggression. Only dexterity of Chinese diplomats, who were able to raise against Hun neighboring tribes and cause in the environment of the Huns civil war, allowed the Han Empire Huns considered conquered and incorporated into the empire. However, this submission was rather formal. Part of the Huns migrated to the west, in the valley of the Talas River and entered into an alliance with the Parthians. Those sent to support the Huns detachment of Roman prisoners of war, and in 36 BC. e. Romans had a meeting with the Chinese. The Romans went on the attack in close order, "tortoise", hiding behind shields. The Chinese put up taut crossbow and shot the Romans, without losing a single soldier then took the fortress and killed all the defenders.