Longnan has a long history. As early as more than 7000 years ago, human beings flourished. Qin unified the six countries, that is, there were four county-level political power systems: West Road, Old Road, Wudu Road and Bian Xia Road. Wudu County was founded in the sixth year of Ding Yuan (A.D. 1 1 1). In the early years of the Republic of China, counties in Longnan belonged to Weichuan Road. 1In August 1949, Wudu District of Gansu Province was established, governing seven counties: Wudu, Xihe, Wenxian, Kangxian, Chengxian, Lixian and Xigu (now Dangchang). 1950- 195 1 was changed to Wudu District. Longnan has a long history and culture. According to historical records, Fuxi, the ancestor of Chinese culture, was born in Qiu Chi, which is now Xihe County. Now there is Fuxi Cliff on Qiu Chi Mountain in Xihe County. Ji Cheng, today's Tianshui area, Qin 'an County and Tianshui City have Dadiwan ruins. In the Zhou Dynasty, Lixian County in Longnan became the birthplace of Qin State. Longnan city
The concubine, the ancestor of Qin Dynasty, was given the surname of "Win" by Zhou Ci for her meritorious service in raising horses in Lixian County. Since Qin Zhuanggong was made a vassal, Qin Zhuanggong, Qin Wengong, Qin Xianggong, etc. They are all built in the Honghe area of Lixian County. Among them, the ancient tomb found in Dabao, Zhaxian County was unanimously recognized by experts as the first cemetery of Qin ancestors-Xiqiao Cemetery, and it is also the location of the "Xigou Mountain" where Qin people made their hair in historical records. During the Jianning period of the Eastern Han Dynasty, Cheng County erected a monument for two governors, Li Minghe Gengxun. On the stone wall of Yuquan Yuqiao Gorge, The West Chamber and Gengxu Monument are engraved. The Cliff Stone Carving in The West Chamber is famous for its majestic calligraphy style and well-preserved "no beginning and no end", which has amazed ancient and modern scholars and is one of the few well-preserved calligraphy treasures in Han Dynasty in China. At the end of the Han Dynasty, the three kingdoms stood in the balance, and Longnan, located at the junction of Wei and Shu, became an important battlefield for both sides to fight. Zhuge Liang attacked Wei from Qishan six times, and interpreted touching stories such as creating danger in the West City, beheading Ma Su with tears, transporting grain and grass with wooden cows and horses, and Jiang Wei fighting with iron dragons, which have been widely circulated for thousands of years. Wei general Deng Ai fought in Dangchang, Wudu and Wenxian, borrowed the ancient road, and made a long-distance attack on more than 700 miles of uninhabited land, wrapped in felt and rolled down the slope, and finally marched into Chengdu, "winning the dragon and destroying Shu". During the Song and Jin Dynasties, the Song generals Wu Ao, Wu Lin and Wu Ting led their troops in Longnan to fight against the nomads from the Jin Dynasty, and they were equally famous with Yue Fei and Han Shizhong, which provided a strong guarantee for the local security of the Southern Song Dynasty. During the democratic revolution, the three main forces of the Chinese Red Army of Workers and Peasants, the Second and Fourth Army and the Red 25 Army all passed through Longnan. In particular, the Central Red Army led by Mao Zedong broke through the natural barrier Lazikou and arrived at Hadapu in Dangchang for renovation. He got important information about the Red Army led by Liu Zhidan and the base areas in northern Shaanxi through the old newspapers of the Kuomintang, and made a major decision to put the foothold of the Red Army's Long March in northern Shaanxi, making Hadapu a gas station and a turning point of victory for the Red Army's Long March.