Gobi Desert in the context of "Sand"

Mongolia is a landlocked country in East Asia. Bordered by Russia to the north and China to the south and southeast, it covers an area of 1,564,116 square kilometres (603,909 square miles), making it the 18th-largest country in the world and the second largest landlocked country after Kazakhstan, as well as the largest landlocked country that does not border an inland sea. With a population of 3.5 million, it is the world's most sparsely populated sovereign state. The country constitutes a significant portion of the Mongolian Plateau, and its natural environment is characterized by grassy steppe, mountains to the north and west, and the Gobi Desert to the south. Ulaanbaatar, the capital and largest city, is home to roughly half of the country's population.

The territory of modern-day Mongolia has been ruled by various nomadic empires, including the Xiongnu, the Xianbei, the Rouran, the First Turkic Khaganate, the Second Turkic Khaganate, the Uyghur Khaganate and others. In 1206, Genghis Khan founded the Mongol Empire, which became the largest contiguous land empire in history. His grandson Kublai Khan conquered China proper and established the Yuan dynasty. After the collapse of the Yuan, the Mongols retreated to Mongolia and resumed their earlier pattern of factional conflict, except during the era of Dayan Khan and Tumen Zasagt Khan.

Turkestan, also spelled Turkistan, is a historical name for the part of Asia lying between the Caspian Sea to the west, Siberia to the north, the Gobi Desert to the east, and Iran, Afghanistan, Pakistan, and Tibet to the south. Turkestan is primarily inhabited by Turkic peoples, as well as Russian and Tajik-Persian minorities. It is subdivided into West Turkestan, which historically belonged to Russia, and East Turkistan or Xinjiang, which forms part of China.

Throughout history, the region has been exposed to the invasion of several different groups and kingdoms, including the Huns, Hepthalites, Bactrians, Imperial China, Arab Caliphate, Hellenistic Macedonian Empire, Achaemenid Empire, as well as various Turkic states and the Mongol Empire. The Qara Khitai also briefly controlled a significant bulk of Turkestan.

Gansu is a province in Northwestern China. Its capital and largest city is Lanzhou, in the southeastern part of the province. The seventh-largest administrative district by area at 453,700 square kilometres (175,200 sq mi), Gansu lies between the Tibetan and Loess plateaus and borders Mongolia's Govi-Altai Province, Inner Mongolia and Ningxia to the north, Xinjiang and Qinghai to the west, Sichuan to the south and Shaanxi to the east. The Yellow River passes through the southern part of the province. Part of Gansu's territory is located in the Gobi Desert. The Qilian mountains are located in the south of the Province.

Gansu has a population of 26 million, ranking 22nd in China. Its population is mostly Han, along with Hui, Dongxiang and Tibetan minorities. The most common language is Mandarin. Gansu is among the poorest administrative divisions in China, ranking last in GDP per capita as of 2019.

The Loess Plateau is a plateau in north-central China formed of loess, a clastic silt-like sediment formed by the accumulation of wind-blown dust. It is located southeast of the Gobi Desert and is surrounded by the Yellow River. It includes parts of the Chinese provinces of Qinghai, Gansu, Shaanxi and Shanxi. The depositional setting of the Chinese Loess Plateau was shaped by the tectonic movement in the Neogene period, after which strong southeast winds caused by the East Asian Monsoon transported sediment to the plateau during the Quaternary period. The three main morphological types in the Loess Plateau are loess platforms, ridges and hills, formed by the deposition and erosion of loess. Most of the loess comes from the Gobi Desert and other nearby deserts. The sediments were transported to the Loess Plateau during interglacial periods by southeasterly prevailing winds and winter monsoon winds. After the deposition of sediments on the plateau, they were gradually compacted to form loess under the arid climate.

The Loess Plateau is one of the largest and thickest loess plateaus in the world. Its 635,000 km2 area corresponds to around 6.6% of the land area in China. Around 108 million people inhabit the Loess Plateau.

The Taklamakan Desert (/ˌtækləməˈkæn/ TAK-lə-mə-KAN) is a desert in northwest China. Located inside the Tarim Basin in Southern Xinjiang, it is bounded by the Kunlun Mountains to the south, the Pamir Mountains to the west, the Tian Shan range to the north, and the Gobi Desert to the east.

The Mongolian Plateau or Altai Plateau is an inland plateau in East Asia covering approximately 3,200,000 square kilometers (1,200,000 sq mi). It is bounded by the Greater Hinggan Mountains in the east, the Yin Mountains to the south, the Altai Mountains to the west, and the Sayan and Khentii mountains to the north. The plateau includes the Gobi Desert as well as dry steppe regions. It has an elevation of roughly 1,000 to 1,500 meters (3,300 to 4,900 ft), with the lowest point in Hulunbuir and the highest point in the Altai.

Politically, the plateau spans all of Mongolia, along with parts of China and Russia. Inner Mongolia and parts of the Dzungarian Basin in Xinjiang encompass the Chinese portion of the plateau. In Russia, the plateau forms Transbaikal, part of Buryatia, and the southern Irkutsk Oblast. The Mongolian Plateau comprises the majority of the area known as the Mongol heartland.

China proper, also called Inner China or Han China, are terms used primarily in the Western world in reference to the traditional "core" regions of Chinese civilization centered around the Yellow River and Yangtze River valleys. There is no fixed definition for China proper as many administrative, cultural and territorial shifts have occurred throughout history. One definition refers to the original heartland regions of the Chinese civilization, the Central Plain (southern North China Plain around the lower Yellow River valley) as well as the historical Nine Provinces; another to the Eighteen Provinces inside Shanhai Pass designated by the Qing regime. In contrast, Outer China is a term usually includes the peripheral marchland regions such as Gobi Desert,, Tarim Basin, Northeast China, Dzungaria, Tibetan Plateau and Yungui Plateau, which were historically autonomous regions with unstable allegiance to the authority of Chinese monarchs.

The term was first used by the Europeans during the 17th century to distinguish the historical "Han lands" (Chinese: 漢地, i.e. regions long dominated by the majority Han Chinese population) from "frontier" regions of China where Han populations intermix with other indigenous ethnicities (e.g. Turkic peoples such as Uyghurs, Kazakhs and Uzbeks, Mongolic peoples, and Tibeto-Burmese peoples such as Tibetans, Yi and Bai) and newer foreign immigrants (e.g. Slavic colonists such as Russians and Ukrainian Cossacks), sometimes known as "Outer China". There was no direct translation for "China proper" in the Chinese language at the time due to differences in terminology used by the Qing regime to refer to the regions.