Longnan City, ancient name "Wudu", Gansu Province, prefecture-level city, located in southeastern Gansu Province, is located in the Qinba Mountains, Loess Plateau, Tibetan Plateau, the intersection of the region, east of Shaanxi, south of Sichuan, between the longitude of 104 ° 01 ′ 19 ″ ~ 106 ° 35 ′ 20 ″, latitude of 32 ° 35 ′ 45 ″ ~ 34 ° 32 ′ 00 ″ between a total area of 27.8 million square kilometers, with a total area of 27.8 million square kilometers. ″, with a total area of 27,800 square kilometers. As of 2022, the resident population was 2,389,100. As of June 2023, Longnan has 1 district and 8 counties under its jurisdiction. The city government is located in Wudu District. Longnan City, more than 7,000 years ago, there is human activity, is the birthplace of the Qin people, the ancient western Chinese ethnic daisies and Qiang people in the core area of activity, Wenxian Baima people are known as "East Asia's oldest tribe". Longnan area, Xia Shang Zhou is ancient Yongzhou, Qin and Han set up Wudu County, Wei, Jin and North and South Dynasties for the Qiu Chi country area, the Tang and Song Dynasty for the Chengzhou, Ming and Qing Dynasty for the order of the state government, the Republic of China is subordinate to the Weichuan Road, after the establishment of the New China for the Wudu area; renamed Longnan area in 1985, because of its location in the south of the Longshan Mountain and the name; in 2004 set up a prefecture-level city of Longnan. Longnan City, Gansu, Shaanxi and Sichuan provinces, known as "the key to Qin Long, Ba Shu throat"; and because of the beautiful landscape, pleasant climate, known as "Long Jiangnan". Gansu is the only whole territory belongs to the Yangtze River Basin area, is the southern part of Gansu Province, an important transportation hub and trade and logistics centers, the Belt and Road western land and sea new corridor node city; Longnan City, there are Baishuijiang National Nature Reserve and other two national nature reserves, the Guanqigou National Forest Park and other four national forest parks, the Wenxian Huanglin Gully National Wetland Park and other two national wetland parks. Longnan is also one of the major Chinese herbal medicines and olive production areas in China, enjoying the reputation of "the millennium medicine township", "natural medicine library" and "the hometown of Chinese olive". In 2022, Longnan City will realize a gross regional product of 56.24 billion yuan, an increase of 7.8%.