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.
Huoshan County, which belongs to Lu'an City, Anhui Province, is located in the west of Anhui Province, the hinterland of the Dabie Mountains and the upper reaches of the Huaihe River, a first-class tributary of the Huaihe River. The total area is 2043 square kilometers. Han Yuan Feng five years (106 years ago) home county, the Sui Dynasty known as Huoshan County. On the whole, it is a mountain landform, and the terrain is inclined from southeast to northwest. It belongs to the north subtropical humid monsoon climate zone. By 2018, Huoshan County had jurisdiction over 13 towns and 3 townships, and there were 2 functional areas with a registered population of 362595, with a regional gross domestic product (GDP) of 17.669 billion yuan, of which: the added value of the primary industry was 1.573 billion yuan, the secondary industry was 9.577 billion yuan, the tertiary industry was 6.519 billion yuan, and the tertiary industrial structure was 8.9, 54.2, 36.9.