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.
Qianfeng District, which belongs to Guang'an City, Sichuan Province, was established on August 8, 2013. It is located in the east of Guang'an City, Sichuan Province, west of Huaying Mountain, east of Qujiang River, a secondary tributary of the Yangtze River, west and north of Guang'an District, south of Huaying City and Linshui County, and east of Dazhu County of Dazhou City. Between latitude 30 °26 "15.02"-30 °39 "8.05" north and longitude 106 °38 "36.14"-106 °59 "14.30" east. The Vanguard Zone covers an area of 504sq km and has jurisdiction over 4 streets, 8 towns and 2 townships. In 2015, the resident population was 256000 (household registered population was 368000). In 2015, the region's gross domestic product (GDP) reached 15.06 billion yuan, an increase of 11.2% over 2014 at comparable prices.