Youyu County
Youyu County, also known by its Chinese name Youyuxian, is a county under the administration of the prefecture-level city of Shuozhou, in the northwest of Shanxi Province, China. It borders Inner Mongolia to the north and west.
| Youyu County 右玉县 Yuyu | |
|---|---|
|  Youyu in Shuozhou | |
| .png.webp) Shuozhou in Shanxi | |
| Coordinates: 39°59′20″N 112°28′01″E | |
| Country | People's Republic of China | 
| Province | Shanxi | 
| Prefecture-level city | Shuozhou | 
| Area | |
| • Total | 1,987 km2 (767 sq mi) | 
| Population  (2020)[1] | |
| • Total | 88,212 | 
| • Density | 44/km2 (110/sq mi) | 
| Time zone | UTC+8 (China Standard) | 
| Youyu County | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Traditional Chinese | 右玉縣 | ||||||||
| Simplified Chinese | 右玉县 | ||||||||
| 
 | |||||||||
| Former names | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Shanwu | |||||||||
| Traditional Chinese | 善無 | ||||||||
| Simplified Chinese | 善无 | ||||||||
| 
 | |||||||||
| Yanmen Commandery | |||||||||
| Traditional Chinese | 雁門郡 鴈門郡 | ||||||||
| Simplified Chinese | 雁门郡 | ||||||||
| Literal meaning | Yanmen Pass Commandery | ||||||||
| 
 | |||||||||
History
    
Shanwu,[2] south of present-day Youyuxian, was the seat of Yanmen Commandery during the Qin and Western Han.[3] The post moved to Yinguan southeast of present-day Shuozhou under the Eastern Han and further south to Daixian under the Kingdom of Wei.[2]
Geography
    
Elevations are generally higher in the south of the county, in which flows the Cangtou River (苍头河); Youyu reaches a north-south extent of 67.7 km (42.1 mi) and east-west width of 45.7 km (28.4 mi). The Great Wall demarcates the northwestern border with Inner Mongolia's Liangcheng and Horinger counties; within the province, Youyu borders Zuoyun County to the east, Shanyin County and Pinglu District to the south.
Climate
    
Youyu has a monsoon-influenced, humid continental climate (Köppen Dwb), with cold and very dry winters, and warm, humid summers. The monthly 24-hour average temperature ranges from −14.4 °C (6.1 °F) in January to 19.5 °C (67.1 °F) in July, and the annual mean is 3.93 °C (39.1 °F). June thru September accounts for over three-fourths of the 410 millimetres (16 in) of annual precipitation. Due to the high elevation and dry climate, the diurnal temperature variation averages 16 °C (29 °F) annually.
| Climate data for Youyu County (1971−2000) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year | 
| Record high °C (°F) | 9.6 (49.3) | 15.4 (59.7) | 20.5 (68.9) | 32.5 (90.5) | 33.4 (92.1) | 32.8 (91.0) | 34.4 (93.9) | 34.0 (93.2) | 33.1 (91.6) | 26.8 (80.2) | 19.5 (67.1) | 11.3 (52.3) | 34.4 (93.9) | 
| Average high °C (°F) | −4.9 (23.2) | −1.1 (30.0) | 5.5 (41.9) | 14.5 (58.1) | 21.4 (70.5) | 25.2 (77.4) | 26.3 (79.3) | 24.6 (76.3) | 19.9 (67.8) | 13.3 (55.9) | 4.2 (39.6) | −2.9 (26.8) | 12.2 (53.9) | 
| Daily mean °C (°F) | −14.4 (6.1) | −10.5 (13.1) | −2.6 (27.3) | 6.1 (43.0) | 13.2 (55.8) | 17.7 (63.9) | 19.5 (67.1) | 17.6 (63.7) | 11.8 (53.2) | 4.7 (40.5) | −4.3 (24.3) | −11.6 (11.1) | 3.9 (39.0) | 
| Average low °C (°F) | −22.4 (−8.3) | −18.6 (−1.5) | −10.5 (13.1) | −2.9 (26.8) | 3.7 (38.7) | 9.2 (48.6) | 12.7 (54.9) | 11.1 (52.0) | 4.4 (39.9) | −2.5 (27.5) | −11.1 (12.0) | −19 (−2) | −3.8 (25.1) | 
| Record low °C (°F) | −40.4 (−40.7) | −36.8 (−34.2) | −29.3 (−20.7) | −17.4 (0.7) | −12.6 (9.3) | −2.1 (28.2) | 3.0 (37.4) | 0.2 (32.4) | −8.0 (17.6) | −14.0 (6.8) | −32.2 (−26.0) | −34.1 (−29.4) | −40.4 (−40.7) | 
| Average precipitation mm (inches) | 2.2 (0.09) | 3.5 (0.14) | 9.9 (0.39) | 17.5 (0.69) | 34.0 (1.34) | 60.2 (2.37) | 107.0 (4.21) | 98.0 (3.86) | 50.9 (2.00) | 18.7 (0.74) | 7.0 (0.28) | 1.5 (0.06) | 410.4 (16.17) | 
| Average precipitation days (≥ 0.1 mm) | 2.3 | 3.4 | 5.4 | 4.7 | 6.4 | 9.8 | 14.1 | 13.0 | 8.7 | 5.6 | 3.6 | 2.2 | 79.2 | 
| Source: Weather China | |||||||||||||
References
    
    Citations
    
Bibliography
    
- www.xzqh.org (in Chinese)
- Hymn of Youyu County Spirit - Cursive Script
- Li Shizhen (2017), Hua Linfu; et al. (eds.), Ben Cao Gang Mu Dictionary, Vol. II: Geographical and Administrative Designations, Berkeley: University of California Press, ISBN 9780520291966.
- Xiong, Victor Cunrui (2009), Historical Dictionary of Medieval China, Historical Dictionaries of Ancient Civilizations and Historical Eras, No. 19, Lanham: Scarecrow Press, ISBN 9780810860537.