The king and crown prince were sent as hostages to the Tang empire.
Xueyantuo was now the predominant power to the north of the Tang empire.
From 668 to 676, the Tang Empire would control northern Korea.
Early 626, the Tujue attacked the frontier of the Tang empire.
At the beginning of the 8th century, the Shato were subject to the Tang Empire.
At that time, the Tang empire was divided between warlords, most of whom were only interested in battling and seizing more territory.
By the end of the eighth century, the Shato had fallen out with the Tang Empire.
Starting from the 620's and 630's, Chinese Tang empire conducted a series of expeditions against the Turks.
By now, the Chinese borders had expanded from eastern China, up north into the Tang Empire.
Seyanto provided military service by assisting the Tang Empire against the Tatars in the 630s.