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.
Minxian, which belongs to Dingxi City, Gansu Province, is named because of Minshan, which is located in the south of Dingxi City, Gansu Province. The establishment of Minxian County can be traced back to the eighth year of Qin Wangzheng (239 BC), which was called Lintao, which was the western starting point of the Qin Great Wall. Minzhou was established in the 10th year of Emperor Wendi's Great Unification of the Western Wei Dynasty (AD 544), changed to Minxian County in 1913, and was placed under the jurisdiction of Dingxi after 1985. Minxian County has jurisdiction over 9 townships and 9 towns, with a total area of 3578 square kilometers and a total population of 490300 (2014). The government is resident in Minyang Town. Minxian County is located on the edge of the Qinghai-Tibet Plateau, is the Gannan grassland to the Loess Plateau, Longnan mountain transition zone, the territory elevation of 2040-3754 meters, known as "Longyuan dry Wharf". The climate is plateau continental climate, low temperature and dry, frequent natural disasters.