San Diego (/ˌsæn diˈeɪɡoʊ/ SAN dee-AY-goh, Spanish: [san ˈdjeɣo]; Spanish for 'Saint Didacus') is a city on the Pacific Ocean coast of Southern California located immediately adjacent to the Mexico–United States border. With a 2020 population of 1,386,932, it is the eighth most populous city in the United States and the seat of San Diego County, the fifth most populous county in the United States, with 3,338,330 estimated residents as of 2019. The city is known for its mild year-round climate, natural deep-water harbor, extensive beaches and parks, long association with the United States Navy, and recent emergence as a healthcare and biotechnology development center. San Diego is the second largest city in the state of California, after Los Angeles.
Naxi District, which belongs to Luzhou City, Sichuan Province, is located in the south of Sichuan Basin, south of the Yangtze River, on both sides of the lower reaches of the Yongning River, between longitude 105 °09 to 105 °37 east, latitude 28 °02 to 14 "to 28 °26 to 53", Hejiang County to the east, Xuyong County to the south, Jiangan County, Yibin City to the west, and Jiangyang District to the north. Naxi District covers an area of 1150.6 square kilometers and has jurisdiction over 12 towns and 3 streets; the total population is 470647 (2016). In 2016, the region's gross domestic product (GDP) reached 13.53385 billion yuan, and the per capita disposable income of urban residents reached 29818 yuan. The topography of Naxi is high in the south and low in the north, with both Pingba, hills and low mountains, with an elevation of 230 to 963.2 meters above sea level, belonging to subtropical humidity.