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.
Wuxuan County, also known as Xiancheng, belongs to Laibin City, Guangxi Zhuang Autonomous region, which is located in the middle of the autonomous region, Guiping City in the east, Guigang City in the south, Xingbin District of Laibin City in the west and Liuzhou City in the north. Wuxuan County has a long history, the Western Han Dynasty Yuan Ding six years (111 BC) began to buy Zhongliu County, Wuxuan County system began in the sixth year of Xuande in the Ming Dynasty (1431). Wuxuan area has a total area of 1739 square kilometers and has jurisdiction over 8 towns and 2 townships, 142 villagers' committees and 7 communities, with a total area of 1739 square kilometers, an area of 902600 mu of arable land and 247100 mu of paddy fields, with a total population of 460000, including 360000 agricultural people. In 2014, the county's GDP reached 9.25 billion yuan, an increase of 8% over the same period last year, with proven lead, zinc, manganese and dolomite