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.
Longyang District is under the jurisdiction of Baoshan City, Yunnan Province, located at the end of the Nujiang Mountains and Gaoligong Mountains, embedded between the Lancang River and the Nujiang River. The total area of Longyang District is 5011 square kilometers, of which mountain and semi-mountainous areas account for 92.6% of the total area. As of 2014, Longyang District has jurisdiction over 2 streets, 6 towns, 6 townships and 4 ethnic townships. By the end of 2010, the resident population of Longyang District was 935600, with 28.15% of the population living in cities and towns and 71.85% of the total population living in rural areas. In 2013, the GDP of Longyang District reached 16.8 billion yuan, and the proportion of the three industries was 25.2, 34.1, 40.7, with a per capita GDP of 17666 yuan. Longyang District is known as the "granary of western Yunnan".