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.
Yuping Dong Autonomous County is a county under the jurisdiction of Tongren City, Guizhou Province. The county is located between 108 °34 mi mi 109 °09 east longitude and 27 °28 mi mi 27 °31'N. The county is located in Xinhuang, Hunan Province in the southeast, Zhenyuan and Cengong in the west, Bijiang District and Wanshan District in the north, 36 kilometers from east to west and 42 kilometers from north to south, with a total area of 516.6 square kilometers. Originally known as Yuping County, it was founded in the fifth year of Yongzheng of the Qing Dynasty (1727). On November 7, 1984, with the approval of the State Council, Yuping County was abolished and Yuping Dong Autonomous County was established. In August 2019, it was selected as a pilot county for the construction of medical community in a compact county.