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.
Chengdong District of Xining City is located in the east of Xining City, the capital of Qinghai Province, in the lower reaches of Xining section of Huangshui River, bordering Ping'an District in the east, Huangzhong County in the south, Huzhong County in the west and Huzhu County in the north, which is the east gate of Xining City. It has jurisdiction over 1 town, 20 administrative villages and 12 community public service centers. The total population of the region is 325500, of which 106200 are ethnic minorities (about 89000 Hui), accounting for 34% of the total population. The area covers an area of 114 square kilometers. Xining Dongguan Mosque, Ma Bufang residence and other provincial key scenic spots and tourist attractions are in the area, and with the development of tourism, minority handicrafts, religious articles, national costumes and other popular tourism products and souvenirs. In December 2018, confirmed by the Ministry of Civil Affairs