Suiyuan in the context of "Wuhai"

Inner Mongolia, officially the Inner Mongolia Autonomous Region, is an autonomous region of China. Its border includes two-thirds of the length of China's border with the country of Mongolia, as well as a small section with Russia (Zabaykalsky Krai). Its capital is Hohhot; other major cities include Baotou, Chifeng, Tongliao and Ordos.

The autonomous region was established in 1947, incorporating the areas of the former Republic of China provinces of Suiyuan, Chahar, Rehe, Liaobei, and Xing'an, along with the northern parts of Gansu and Ningxia.

The Ordos culture (simplified Chinese: 鄂尔多斯文化; traditional Chinese: 鄂爾多斯文化; pinyin: È'ěrduōsī Wénhuà) was a material culture occupying a region centered on the Ordos Loop (corresponding to the region of Suiyuan, including Baotou to the north, all located in modern Inner Mongolia, China) during the Bronze and early Iron Age from c. 800 BCE to 150 BCE. The Ordos culture is known for significant finds of Scythian art and may represent the easternmost extension of Indo-European Eurasian nomads, such as the Saka, or may be linkable to Palaeo-Siberians or Yeniseians. Under the Qin and Han dynasties, the area came under the control of contemporaneous Chinese states.

Mengjiang, also known as Mengkiang, officially the Mengjiang United Autonomous Government, was an autonomous zone in Inner Mongolia. It was formed in 1939 as a puppet state of the Empire of Japan, and from 1940 was placed under the nominal sovereignty of the Reorganized National Government of the Republic of China (which was itself also a puppet state). It consisted of the previously Chinese provinces of Chahar and Suiyuan, corresponding to the central part of modern Inner Mongolia. It has also been called Mongukuo or Mengguguo (or Mengkukuo; Chinese: 蒙古國; in analogy to Manchukuo, another Japanese puppet state in Manchuria). The capital was Kalgan, from where it was under the nominal rule of Mongol nobleman Demchugdongrub. The territory returned to Chinese control after the defeat of the Japanese Empire in 1945.

The Guominjun (traditional Chinese: 國民軍; simplified Chinese: 国民军; pinyin: Guómínjūn; Wade–Giles: Kuo-min-chün), also known as the Kuominchun, abbreviated as GMJ and KMC, was a military faction founded by Feng Yuxiang, Hu Jingyi and Sun Yue during China's Warlord Era. The KMC had control of much of Northwest China, including Shaanxi, Chahar and Suiyuan, hence its other name, the Northwest Army (西北軍; not to be confused with the later army of the same name under Yang Hucheng).