One of the successors of the Hunnu Empire was the powerful state of Sumbe. Since 150, the time when Tanshihuai, the son of Tuluho had unified the small provinces of Syanbi and made it into a bigger state, announcing himself as the ruler, the state had dominated the central Asia for 100 years.

 During the time of Tanshihuai the state become visibly powerful and even conquered back all the territory, which was once the land of Hunnu when Modun Shanyio was the ruler. At that time, the economy and trade had even expanded and reached the same level as Hunnu Empire.

The ancestors of nomadic Syanbi were Dunhu / Hu people of the east/ and had blood relations with the Hunnus. 

The state had inherited the statehood of Hunnu and even expanded it, which was a significant one step forward in development. Especially their strategy of military was so powerful. 
 
The descendants of Syanbi are relatively unknown. The last ruler Kebijan /ruled between 210 and 235/ was assassinated. The Kidan State is regarded as the successors of the Syanbi.

By the time Syanbi had fell down, The Myun State / 318-360/ and Toba Wei / Yuan State, 307-581/ had succeeded it. Togans, the part of Myun moved to the Huh Nuur, Tsaidam and established the Togan State in the 4th century. Their descendents are the Sharai of the 10th to 9th century and in the 13th century they got mixed with the Mongol nomads.