Dongyi Protectorate

The Dongyi Protectorate (Chinese: 東夷都護府; lit. 'Protectorate of the Eastern Barbarians') from 618 to 907 AD, was a Tang dynasty protectorate in present-day Hebei Province and eastern Inner Mongolia. In 648, Emperor Taizong of Tang established the Jiaole Area Command and appointed the Xi chief Kotuche (可度者) as its military governor.^[2] In 648, Taizong created the Songmo Area Command and "diplomatically" appointed Kuko (窟哥), chieftain of the Khitans as its Military Governor.^[3] In reality, the Tang court had lost actual control of the area. After the Tang dynasty collapsed, the area became the territory of the Khitan-led Liao dynasty.

Map of the Tang Empire and its Protectorates circa 660 CE.^[1]