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.
Qumalai County is a county under the jurisdiction of Yushu Tibetan Autonomous Prefecture in Qinghai Province. it is located in the southwest and north of Qinghai Province. the county government is stationed in Yogai Town, 310 kilometers away from the state capital. It is located in longitude 92 °56 "97 °35" east and latitude 33 °36 "35 °40 'north. The land area is 47000 square kilometers, with a population of 32000 (2012). The population is mainly Tibetan, and it has jurisdiction over one town and five townships. The government is stationed in a new town. In 2012, Qumalai County completed a regional GDP of 453 million yuan (calculated at comparable prices), an increase of 9.4% compared with 2011. The total investment in fixed assets reached 490 million yuan, and the local general budget income reached 7.82 million yuan. Famous tourist attractions include the Monument to the Source of the Yellow River, King Gesar's landing on the platform, and Tibetan Buddhism.