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.
Tuquan County is one of the counties under the jurisdiction of Xingan in Inner Mongolia Autonomous region, which is renamed by Liquan County. Located in the southwest of Xingan, Inner Mongolia Autonomous region, it is located in the transitional zone between Songnen Plain and Horqin grassland in Daxing'an Mountains, and borders Taonan City, Jilin Province in the east. Tuquan County has a total area of 4889.5 square kilometers and has jurisdiction over 6 towns and 6 townships. The total population is 303000, of which the agricultural population is 216000, living in 14 ethnic groups such as Han, Mongolia and Manchuria, and the population of ethnic minorities is 92500, accounting for 30.5% of the total population of the county. It is the autonomous region's key support to the old revolutionary base areas, the national poverty-stricken areas and the national key counties in poverty alleviation and development. In 2013, the GDP of Tuquan County was 6.06 billion yuan, an increase of 8.2% over the same period in 2012.