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.
Sunan Yugur Autonomous County, which belongs to Zhangye City, Gansu Province, is the only Yugur Autonomous County in China, located in the middle of Hexi Corridor and at the northern foot of the Qilian Mountains. It is 650km long from east to west and 120,200km wide from north to south, with a total area of 23800 square kilometers (2014). With a population of 37579 (2014), Sunan Yugur Autonomous County completed a GDP of 2.814 billion yuan in 2013. There are Qifeng Wenshu Temple Scenic spot, Minghua Township Tourism Scenic spot, Huangcheng Scenic spot, Horseshoe Temple Scenic spot and other famous scenic spots. Sunan Yugur Autonomous County has successively won "National Minority Family Planning Advanced Unit", "National Forest Fire Prevention Advanced Unit", provincial "civilized County", "Sanitary County", "double support Model City" and "National Intangible Cultural Heritage Protection Advanced".