Protectorate General to Pacify the North

The Protectorate General to Pacify the North or Grand Protectorate General to Pacify the North (647–784) was a Chinese established by Tang Dynasty in 647 to pacify the former territory of Xueyantuo, which extended from Lake Baikal to the north, the Gobi Desert to the south, the Khingan Mountains to the east, and the Altay Mountains to the west.

In 646 the Tang dynasty conquered the Xuyantuo and on 9 January 647, 13 Tiele and Uyghur tribes surrendered to the Tang. Tang Taizong organized them into six commanderies and seven tributary prefectures under the Jimi system. The six commanderies were Hanhai (翰海府), Jinwei (金微府), Yanran (燕然府), Youling (幽陵府), Guilin (龜林府), and Lushan (盧山府). The seven prefectures were Gaolan (皐蘭州), Gaoque (高闕州), Jilu (雞鹿州), Jitian (雞田州), Yuxi (榆溪州), Dailin (蹛林州), and Douyan (竇顏州). Collectively these were known as the "Cantian Khan Circuit." On 10 April the Yanran Protectorate was created at the foothills of the Shanyu Plateau, southwest of present-day Urad Middle Banner, and governorship of the 13 tribes was handed over to the protector general, Li Suli (李素立), who served from 647-649.

On 5 February 663 the Yanran Protectorate was renamed Hanhai Protectorate .

In August 669 the Hanhai Protectorate was renamed the Protectorate General to Pacify the North, otherwise known as the Anbei Duhufu. Its seat was relocated to the city of Datong in present day Ejin Banner.

In 687 the seat of Anbei was moved to the city of Xi'an near modern Minle County due to incursions by the Second Turkic Khaganate.

In 698 the seat was moved to Yunzhong near modern Horinger.

In 708 the Shuofang Army general Zhang Renyuan ordered the construction of three Shouxiang cities north of the Yellow River as military outposts to deter incursions from the Second Turkic Khaganate. The seat of Anbei was moved to the western Shouxiang city near modern Wuyuan County, Inner Mongolia.

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