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.
Eshan Yi Autonomous County (referred to as Eshan County) is a county under the jurisdiction of Yuxi City, the old name is "Linjun Yanyi, provincial capital Nanfan". Founded on May 12, 1951, it is the first Yi autonomous county in the people's Republic of China and the first county in Yunnan Province to exercise regional ethnic autonomy. Eshan County is bordered by Hongta District in the east, Tonghai County in the southeast, Shiping County in Honghe Hani Yi Prefecture in the south, Xinping Yi and Dai Autonomous County in the southwest, Shuangbai County in Chuxiong Yi Autonomous Prefecture in the northwest, Yimen County in the north and Jinning District in the northeast. The county seat is located in Shuangjiang Street, 24 kilometers away from Yuxi City and 116 kilometers away from Kunming City. Yuyuan Expressway runs through the county. By the end of 2017, Eshan County had jurisdiction over 2 streets, 3 towns and 3 townships, covering an area of 1972 square kilometers.