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.
Xiangxi Tujia and Miao Autonomous Prefecture, which belongs to Hunan Province, is the only minority autonomous prefecture in the province. It is located in the northwest of Hunan Province, between longitude 109 °10 "110 °22.5" east and latitude 27 °44.5 "29 °38 'north. It is located at the junction of Hunan, Hubei, Guizhou and Chongqing. Xiangxi Miao Autonomous region was established in August 1952, changed to Xiangxi Miao Autonomous Prefecture in 1955, and Xiangxi Tujia and Miao Autonomous Prefecture was established in September 1957. It has jurisdiction over 7 counties and 1 city, covering an area of 15462 square kilometers. Xiangxi is a subtropical monsoon humid climate with obvious continental climate characteristics. In 2016, the resident population was 2.636 million. Among them, the urban population is 1.1351 million, the rural population is 1.5009 million, and the urbanization rate is 43%.