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.
Jinchuan County, formerly known as Jinhua County, belongs to Aba Prefecture of Sichuan Province, located in the northwest of Sichuan Plateau, southwest of Aba Tibetan and Qiang Autonomous Prefecture, located on the eastern edge of the Qinghai-Tibet Plateau, upstream of the Dadu River, crossing 101 °13 degrees east longitude 102 °19km, 31 °0km north latitude 31 °58km, Jinchuan County covers an area of 5550 square kilometers. Jinchuan has a continental plateau monsoon climate, with sunny weather and a large temperature difference between day and night. It has jurisdiction over 22 townships and 110 administrative villages (communities). The county government is based in Lewu Town. As of 2016, Jinchuan County has a total population of 72400, with 80% of the agricultural population and 75% of the minority population. Sui Dynasty, Jinchuan County, Tang Dynasty, Jinchuan Prefecture, Qing Dynasty, Qianlong 14 years (1749), changed soil to flow, set up village governance, 1936