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.
Tianzhu Tibetan Autonomous County (Tianzhu County for short), which is under the jurisdiction of Wuwei City, Gansu Province, is the first area to exercise regional ethnic autonomy after the founding of the people's Republic of China. Tianzhu, known as Huarui in Tibetan, means heroic tribe. The Summer Solstice was the pastoral land of Rong Qiang, Yueshi, Xiongnu and other ethnic groups in the early Han Dynasty, which was included in the territory of the Han Dynasty since Emperor Wu of the Han Dynasty. after the Tang Dynasty, it gradually formed a multi-ethnic settlement with Tubo (present-day Tibetan) as the main ethnic group. Tianzhu County is located in the middle of Gansu Province, in the south of Wuwei City, in the Hexi Corridor and the eastern end of Qilian Mountains. Jingtai County in the east, Menyuan County in Haibei Prefecture of Qinghai Province in the west, Huzhu County in Haidong City and Ledu District in Haidong City in the west, Yongdeng County in the south, Liangzhou District and Gulang County in the north, and Sunan County in the northwest. By the end of 2011, Tianzhu County covers an area of 7149 square kilometers and has jurisdiction over 9 towns and 10 towns.