Memphis is a city in the U.S. state of Tennessee. It is the seat of Shelby County in the southwest part of the state; it is situated along the Mississippi River. With a population of 633,104 at the 2020 U.S. census, Memphis is the second-most populous city in Tennessee, after Nashville.
Memphis is the fifth-most populous city in the Southeast, the nation's 28th-largest overall, as well as the largest city bordering the Mississippi River. The Memphis metropolitan area includes West Tennessee and the greater Mid-South region, which includes portions of neighboring Arkansas, Mississippi and the Missouri Bootheel. One of the more historic and culturally significant cities of the Southern United States, Memphis has a wide variety of landscapes and distinct neighborhoods.
Xinlong County, which belongs to Ganzi Tibetan Autonomous Prefecture of Sichuan Province, is located in the middle of Ganzi Prefecture in Sichuan Province and the southeast edge of Qinghai-Tibet Plateau. It belongs to the contact zone between West Sichuan Mountain Plain and Hengduan Mountains. Xinlong County is connected with Luhuo County and Daofu County to the east, Yajiang County and Litang County to the south, Baiyu County to the west, Ganzi County to the north, Dege County to the northwest, and latitude 30 °23 to 31 °32 'and longitude 99 °37 to 100 °54' east. The terrain of Xinlong County is high in the north and low in the south. The highest elevation is 5992 meters and the lowest point is 2760 meters above sea level. Ganzi Xinlong Highway to the north of Xinlong County is connected with National Highway 317 via 100 kilometers. By the end of 2013, Xinlong County has an area of 9182.74 square kilometers and has jurisdiction over 1 town, 18 townships and 1 street office, with a total population of 49833. 2013