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.
Linze County, which belongs to Zhangye City, Gansu Province, is located in the middle of Hexi Corridor, Gansu Province, between 99 °51-#39;-100 °30-#39;, 38 °57-#39;-39 °42-#39;. It is bordered by Ganzhou District, Zhangye City in the east, Gaotai County in the west, Qilian Mountain in the south and Sunan Yugu Autonomous County in the south, and Alashan right Banner in Inner Mongolia Autonomous region in the north, with a total area of 2729 square kilometers. As of 2010, Linze County has jurisdiction over 7 towns, a total of 71 administrative villages, with a total population of 150294 (2013), including Han, Hui, Tibetan, Mongolian, Yugur and other 11 ethnic groups. In 2017, Linze County achieved a gross domestic product (GDP) of 5.15 billion yuan, compared with 2016