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.
Yanyuan County, which belongs to Liangshan Yi Autonomous Prefecture of Sichuan Province, is located on the southeast edge of the Qinghai-Tibet Plateau in Sichuan Province and on the west bank of the lower reaches of the Yalong River. The geographical coordinates are: longitude 100 °42 °09 "- 102 °03 °44" east and latitude 27 °06 °31-28 °16 °31 "north. Across the Yalong River from Xichang City, Dechang County and Miyi City in the east, Yanbian County in the south, Ningyi County in Yunnan Province in the west, and Muli Tibetan Autonomous County and Mianning County in the north. As of 2012, Yanyuan County covers an area of 8398.6 square kilometers and has a population of 356000. Yanyuan County, which belongs to Sichuan Province, contains 41 kinds of mineral resources, such as salt, iron, gold, etc.; it is rich in many kinds of rare animals, such as black-crowned crane, bear, Swertia, etc., and is rich in apple, Phnom Penh melon seeds and other famous and special products, which is the apple production in southwest China.