In two sanguinary battles he vanquished the Khitan armies, and threatened with early extinction the once famous dynasty of Leaoutung.

Then came the Later Tsins, who only held their authority on the sufferance of the powerful Khitan king, who reigned over Leaoutung and Manchuria.

The success of the Khitan Yeliu Liuko had not been less considerable, and he was proclaimed King of Leaou as a vassal of the Mongols.