A report on Inner Mongolia and Liao dynasty

Hebei borders the provinces of Shanxi to the west, Henan to the south, Shandong to the southeast and Liaoning to the northeast, as well as the Inner Mongolia Autonomous Region to the north.

The next dynasty, the Later Jin under Shi Jingtang, posthumously known as Emperor Gaozu of Later Jin, ceded much of modern-day northern Hebei to the Khitan Liao dynasty in the north; this territory, called the Sixteen Prefectures of Yanyun, became a major weakness in the Chinese defense against the Khitans for the next century, since it lay within the Great Wall.

During the Liao dynasty, they dominated a vast area of Siberia and Northern China.

The man came from the Tu River (Lao Ha river in modern-day Jilin, Manchuria) and the woman from the Huang River (modern day Xar Moron river in Inner Mongolia).

It usually corresponds specifically to the three provinces east of the Greater Khingan Range, namely Liaoning, Jilin, and Heilongjiang, but historically is meant to also encompass the four easternmost prefectures of Inner Mongolia west of the Greater Khingan.

The region came under the rule of various states throughout history, including Yan, Jizi Chaoxian, Weiman Chaoxian, Fuyu, Western Han, Gaogouli, Xin dynasty, Eastern Han, Gongsun Yan, Cao Wei, Western Jin, Former Yan, Former Qin, Later Yan, Tang dynasty, Wu Zhou, Bohai, Liao dynasty, Jin dynasty, Eastern Liao, Later Liao, Eastern Xia, Mongol Empire, Yuan dynasty, Northern Yuan, Ming dynasty, Qing dynasty, and Republic of China.

Liaoning is also known in Chinese as "the Golden Triangle" from its shape and strategic location, with the Yellow Sea (Korea Bay and Bohai Sea) in the south, North Korea's North Pyongan and Chagang provinces in the southeast, Jilin to the northeast, Hebei to the southwest, and Inner Mongolia to the northwest.

Eventually, Liaoning was conquered by the Khitan Liao dynasty, followed by the Jurchen Jin dynasty and the Mongol Empire.

He adopted as his capital city Kaiping in Inner Mongolia, later renamed Shangdu.

One of his successful projects was to finish the long-stalled official histories of the Liao, Jin, and Song dynasties, which were eventually completed in 1345.

Control over parts of northeast China and Manchuria by the Liao dynasty of the Khitan people also stemmed from this period.

In the year 630, Tang armies captured areas of the Ordos Desert, modern-day Inner Mongolia province, and southern Mongolia from the Turks.

Jilin borders North Korea (Rasŏn, North Hamgyong, Ryanggang and Chagang) and Russia (Primorsky Krai) to the east, Heilongjiang to the north, Liaoning to the south, and Inner Mongolia to the west.

The region then fell successively under the domination of the Xiongnu, Xianbei state, Khitan Liao Dynasty, the Jurchen Jin Dynasty, and the Mongol Yuan dynasty.

In 938, after the fall of the Tang, the Later Jin ceded the frontier territory including what is now Beijing to the Khitan Liao dynasty, which treated the city as Nanjing, or the "Southern Capital", one of four secondary capitals to complement its "Supreme Capital" Shangjing (modern Baarin Left Banner in Inner Mongolia).

Rehe was once at the core of the Khitan-led Liao Dynasty.

In 1955, the administration of the People's Republic of China divided the area between Hebei province, Liaoning Province, Tianjin Municipality, and the Inner Mongolia Autonomous Region.

One of its older Mongolian names was the "Black River", because the river runs clear before it enters the Loess Plateau, but the current name of the river among Inner Mongolians is Ȟatan Gol (, "Queen River").

A similar proposal from the Song engineer Li Chun concerning flooding the lower reaches of the river to protect the central plains from the Khitai was overruled in 1020: the Chanyuan Treaty between the two states had expressly forbidden the Song from establishing new moats or changing river courses.