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.
Xiuwen County is located in the middle of Guizhou, which is under the jurisdiction of Guiyang City. It is located at 26 °45 °N, 27 °12 °N, 106 °21 °E, 106 °53'E. It is bordered by Wudang District in the east, Baiyun District in the south, Maotiao River and Qingzhen City in the south, Liuguang River in the west and Jinsha County in the west, and Xifeng County in the north. Longchang Town, where the county is located, is located in the south of the county, 38 kilometers away from the provincial capital Guiyang and 20 kilometers away from the municipal administrative center. The county has a total area of 1075.70 square kilometers and a total population of 311300 (2008). Has won the national scientific and technological progress advanced county, the national cultural relics work advanced county and so on the title. On January 25, 2019, he was selected as the national "Ping an Agricultural Machinery" demonstration county in 2018.