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.
Gaize County, which belongs to the Tibet Autonomous region, is located in northwest Tibet, the eastern part of Ali region and the hinterland of the northern Tibetan plateau. It is connected with Shuanghu County and Nima County in Naqu City in the east, Cuoqin County in the southeast, Zhongba County in Xigaze City in the south, Geji County and Ritu County in the west, and Xinjiang Uygur Autonomous region in the north by the Kunlun Mountains. It is 450km long from east to west and 670km wide from north to south, with a total area of 135600 square kilometers. It is the largest pure animal husbandry county in Ali, accounting for about 1/3 of the total area of Ali. In 2011, Gaize County has a total population of 22000. Gaize County has jurisdiction over 1 town and 6 townships: Gaize Town, Wuma Township, Xianqian Township, Mami Township,