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.
Dianbai District, which belongs to Maoming City, Guangdong Province, is located on the southwest coast of Guangdong Province, between longitude 110 °54mm Mel 111 °29km E and latitude 21 °22m Mel 21 °59' N, with a subtropical monsoon climate, with a land area of 2128 square kilometers, and jurisdiction over 21 towns and 4 township-level units in 2 streets. At the end of 2017, the total registered population of the district was 1.9327 million and the resident population of the district was 1.544 million. Dianbai District got its name from thunder and lightning. In the ninth year of Sui Kaihuang (AD 589), Dianbai County was merged with Dianbai County and Haichang County. Dianbai County said that in 2014, with the approval of the State Council, Maogang District and Dianbai County were abolished and the Dianbai District was merged to establish Dianbai District. Dianbai District's tourism resources include China's first Beach, Luokeng Reservoir, Jinguai Mountain, Fangji Island and so on. 2017,