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.
Yutian County is a county under the jurisdiction of Hotan area of Xinjiang. It is located in Tian County, named after the ancient country of the Han Dynasty. In 1959, it was simplified to Yutian County. Yutian County is located in the southwest of Xinjiang Uygur Autonomous region. It is bordered by Minfeng County to the east, Taklimakan Desert and Shaya County to the north, Cele County to the west, and Gaize County and Ritu County in the Tibet Autonomous region to the south. From 2006 to 2010, the total GDP of Yutian County reached 4.415 billion yuan, which was 1.87 times of the cumulative output value from 2001 to 2005. As of December 2017, the county has a total area of 40320 square kilometers and a total population of 289500, of which the Uygur population accounts for 98.3% of the county's total population, and has jurisdiction over 13 townships, 2 towns, 3 farms, 2 subdistrict offices and 205 administrative units.