Longxian County, which belongs to Baoji City, Shaanxi Province, is located in the west of Guanzhong Plain and northwest of Baoji City. It borders Qianyang County in the east, chencang district in the south and Qingshui County, Zhangjiachuan Hui Autonomous County, Huating County, Chongxin County and Lingtai County in Tianshui City, Gansu Province in the northwest. With a total area of 2277 square kilometers, it governs 10 towns.
Longxian County, known as Longzhou in ancient times, is the west gate of Shaanxi Province, named after its location in the east of Gansu Province. It is a third-class city in Guanzhong Plain urban agglomeration and a sub-central city in Baoji. With a rich history, Qin Xianggong has built its capital here and expanded its territory; Qin Shihuang's westward journey was regarded as the west gate of Qin; Emperor Wu of the Han Dynasty boarded the Dragon Head and set up a great earthquake pass here, which was called "Qin Dou Han Pass" in history. Since the Han and Tang Dynasties, Guanshan has become an important post station on the Silk Road. Zhang Qian went to the Western Regions, and Tang Xuanzang learned from Tianzhu, making it the first male pass for Chang 'an to go out to the Western Regions.
history of theautomobile
1867, German engineer Otto introduced the world's first reciprocating piston four-stroke engine. 1885, karl benz, a German, bought Otto's patent, installed an internal combustion engine and an accelerator on a three-wheeled carriage, and applied for the patent of the first three-cylinder car on 1886129 October, with the patent certificate number of 37435, and obtained the invention right of the first car in the world. This day is considered as the birth day of modern cars.
1886, gottlip Daimler of Germany made the world's first four-wheeled vehicle, which should be the originator of four-wheeled vehicles, equipped with 1. 1 horsepower gasoline engine. 1887 Mercedes-Benz Automobile Company, the originator of automobiles, was established, 1890 Daimler Company was established. Until 1926, Mercedes-Benz Daimler merged into Daimler-Benz and began to produce Mercedes-Benz cars.