Events now pursued their logical course. The contrast between the central power, now become entirely Chinese, and the remains of the tribes who were with their herds mainly in Shansi and the Ordos region and were hopelessly impoverished, grew more and more acute. From 530 onward the risings became more and more formidable. A few Toba who still remained with their old tribes placed themselves at the head of the rebels and conquered not only the whole of Shansi but also the capital, where there was a great massacre of Chinese and pro-Chinese Toba. The rebels were driven back; in this a man of the Kao family distinguished himself, and all the Chinese and pro-Chinese gathered round him. The Kao family, which may have been originally a Hsien-pi family, had its estates in eastern China and so was closely associated with the eastern Chinese gentry, who were the actual rulers of the Toba State. In 534 this group took the impotent emperor of their own creation to the city of Yeh in the east, where he reigned _de jure_ for a further sixteen years. Then he was deposed, and Kao Yang made himself the first emperor of the Northern Ch'i dynasty (550-577).

The national Toba group, on the other hand, found another man of the imperial family and established him in the west. After a short time this puppet was removed from the throne and a man of the Yue-wen family made himself emperor, founding the "Northern Chou dynasty" (557-580). The Hsien-pi family of Yue-wen was a branch of the Hsien-pi, but was closely connected with the Huns and probably of Turkish origin. All the still existing remains of Toba tribes who had eluded sinification moved into this western empire.

The splitting of the Toba empire into these two separate realms was the result of the policy embarked on at the foundation of the empire. Once the tribal chieftains and nobles had been separated from their tribes and organized militarily, it was inevitable that the two elements should have different social destinies. The nobles could not hold their own against the Chinese; if they were not actually eliminated in one way or another, they disappeared into Chinese families. The rest, the people of the tribe, became destitute and were driven to revolt. The northern peoples had been unable to perpetuate either their tribal or their military organization, and the Toba had been equally unsuccessful in their attempt to perpetuate the two forms of organization alongside each other.

These social processes are of particular importance because the ethnical disappearance of the northern peoples in China had nothing to do with any racial inferiority or with any particular power of assimilation; it was a natural process resulting from the different economic, social, and cultural organizations of the northern peoples and the Chinese.