Youyu County, also known by its

Chinese Chinese can refer to: * Something related to China * Chinese people, people of Chinese nationality, citizenship, and/or ethnicity **''Zhonghua minzu'', the supra-ethnic concept of the Chinese nation ** List of ethnic groups in China, people of ...

name Youyuxian, is a

county A county is a geographic region of a country used for administrative or other purposes Chambers Dictionary, L. Brookes (ed.), 2005, Chambers Harrap Publishers Ltd, Edinburgh in certain modern nations. The term is derived from the Old French ...

under the administration of the

prefecture-level city A prefecture-level city () or prefectural city is an administrative division of the People's Republic of China (PRC), ranking below a province and above a county in China's administrative structure. During the Republican era, many of China ...

Shuozhou Shuozhou is a prefecture-level city in northern Shanxi province, China, bordering Inner Mongolia to the northwest. It is situated along the upper reaches of the Fen River. The prefecture as a whole has an area of about and, in 2010, a pop ...

, in the northwest of

Shanxi Province Shanxi (; ; formerly romanised as Shansi) is a landlocked province of the People's Republic of China and is part of the North China region. The capital and largest city of the province is Taiyuan, while its next most populated prefecture-level ...

, China. It borders

Inner Mongolia Inner Mongolia, officially the Inner Mongolia Autonomous Region, is an autonomous region of the People's Republic of China. Its border includes most of the length of China's border with the country of Mongolia. Inner Mongolia also accounts for a ...

to the north and west.

History

Shanwu,. south of present-day Youyuxian, was the seat of

Yanmen Commandery Yanmen Commandery was an administrative subdivision (''jùn'') of the state of Zhao Zhao may refer to: * Zhao (surname) (赵), a Chinese surname ** commonly spelled Chao in Taiwan or up until the early 20th century in other regions ** Chiu, fr ...

during the

Qin Qin may refer to: Dynasties and states * Qin (state) (秦), a major state during the Zhou Dynasty of ancient China * Qin dynasty (秦), founded by the Qin state in 221 BC and ended in 206 BC * Daqin (大秦), ancient Chinese name for the Roman Emp ...

and

Western Han The Han dynasty (, ; ) was an imperial dynasty of China (202 BC – 9 AD, 25–220 AD), established by Liu Bang (Emperor Gao) and ruled by the House of Liu. The dynasty was preceded by the short-lived Qin dynasty (221–207 BC) and a war ...

. The post moved to Yinguan southeast of present-day

under the

Eastern Han The Han dynasty (, ; ) was an imperial dynasty of China (202 BC – 9 AD, 25–220 AD), established by Liu Bang (Emperor Gao) and ruled by the House of Liu. The dynasty was preceded by the short-lived Qin dynasty (221–207 BC) and a warr ...

and further south to

Daixian Dai County, also known by its Chinese name Daixian, is a county in Xinzhou, Shanxi Province, China. Its county seat at Shangguan is also known as Daixian. The county has an area of and had a population of 178,870 at the time of the 2020 c ...

under the

Kingdom of Wei Wei or WEI may refer to: States * Wey (state) (衛, 1040–209 BC), Wei in pinyin, but spelled Wey to distinguish from the bigger Wei of the Warring States * Wei (state) (魏, 403–225 BC), one of the seven major states of the Warring States per ...

Geography

Elevations are generally higher in the south of the county, in which flows the Cangtou River (); Youyu reaches a north-south extent of and east-west width of . The

Great Wall The Great Wall of China (, literally "ten thousand ''li'' wall") is a series of fortifications that were built across the historical northern borders of ancient Chinese states and Imperial China as protection against various nomadic groups ...

demarcates the northwestern border with

Liangcheng Liangcheng County ( Mongolian: Лиыанчан сиыан ''Liyaŋčaŋ siyan''; ) is a county of south-central Inner Mongolia, People's Republic of China, bounded by Shanxi province to the south. It is under the administration of Ulaan Chab ci ...

and

Horinger Horinger ( Mongolian: Қорин Гэр сиыан ''Qorin Ger siyan''; ) is a county of Inner Mongolia Autonomous Region, North China, it is under the administration of the prefecture-level city of Hohhot, the capital of Inner Mongolia, bord ...

counties; within the province, Youyu borders

Zuoyun County Zuoyun County is a county in the north of Shanxi province, China, bordering Inner Mongolia to the north. It is the westernmost county-level division of the prefecture-level city of Datong Datong is a prefecture-level city in northern Shanxi ...

to the east,

Shanyin County Shanyin County () is a county in the northwest of Shanxi province, China. It is under the administration of Shuozhou City. The Guangwu section of the Great Wall runs along the county. Near the section of the Great Wall are the historic villages ...

and

Pinglu District Pinglu District () is a district of the city of Shuozhou, Shanxi province, China, bordering Inner Mongolia Inner Mongolia, officially the Inner Mongolia Autonomous Region, is an autonomous region of the People's Republic of China. Its border in ...

to the south.

Climate

Youyu has a

monsoon A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal osci ...

-influenced,

humid continental climate A humid continental climate is a climatic region defined by Russo-German climatologist Wladimir Köppen in 1900, typified by four distinct seasons and large seasonal temperature differences, with warm to hot (and often humid) summers and freezing ...

(

Köppen Köppen is a German surname. Notable people with the surname include: * Bernd Köppen (born 1951), German pianist and composer * Carl Köppen (1833-1907), German military advisor in Meiji era Japan * Edlef Köppen (1893–1939), German author and ...

''Dwb''), with cold and very dry winters, and warm, humid summers. The monthly 24-hour average temperature ranges from in January to in July, and the annual mean is . June thru September accounts for over three-fourths of the of annual precipitation. Due to the high elevation and dry climate, the

diurnal temperature variation In meteorology, diurnal temperature variation is the variation between a high air temperature and a low temperature that occurs during the same day. Temperature lag Temperature lag is an important factor in diurnal temperature variation: peak da ...

averages annually.

References

Citations

Bibliography

www.xzqh.org

* . * . County-level divisions of Shanxi Shuozhou {{Shanxi-geo-stub