Gansu Ningxia Shaanxi Shanxi Hebei Liaoning Jilin Hei Longjiang These provinces are the closest to Inner Mongolia, and all share a border with it.

The Inner Mongolia Autonomous Region is one of the five autonomous regions of the People's Republic of China (PRC), known as Inner Mongolia for short, and is located on the northern border of the PRC, stretching diagonally from northeast to southwest in a long and narrow shape, with a straight-line distance of 2,400 kilometers from east to west and a span of 1,700 kilometers from north to south, spanning the northeastern, northwestern, and northwestern regions.

Extended information:

Inner Mongolia is bordered by Heilongjiang, Jilin, and Liaoning provinces in the east, Hebei, Shanxi, Shaanxi, and Ningxia provinces and regions in the south and southwest, Gansu province in the west, Mongolia in the north, and Russia in the northeast, with a 4,221-kilometer-long national boundary. It has a total land area of 1.183 million square kilometers, accounting for 12.3% of the country's total area.

Inner Mongolia, rich in resources, grassland, forests, rare earths, iron and coal resources are important in the country. Grassland area of 870,000 square kilometers (available grassland area of 687,000 square kilometers), accounting for the country's total area of grassland 1/4, ranking first in the country. Famous grasslands are the Hulunbeier grassland and Xilingol grassland.

Forests cover an area of 166,000 square kilometers, accounting for 14.1% of the total land area, with a forest stock of 970 million cubic meters, ranking fifth in the country. There are more than 40 kinds of non-ferrous metal deposits including copper, lead, zinc, nickel, cobalt, tungsten, tin, bismuth, molybdenum, gold, silver, platinum, niobium, beryllium, uranium, rare earths and so on, and the deposits of sulfurous iron ore, rare earths, niobium, beryllium, glacial chondrite, vermiculite, onyx and so on, are the first ones in China.

References:

Baidu Encyclopedia: Inner Mongolia