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.
Jianzha County is located in the southeast of Qinghai Province and in the north of Huangnan Tibetan Autonomous Prefecture. Most of Jianzha County is bounded by the Yellow River and Hualong County in the northeast, Xunhua County in the southeast, Guide County in the west and Tongren County in the south. The county is about 87 kilometers from north to south and 48 kilometers from east to west, with a total area of 1714 square kilometers. As of 2011, the total population was 54300, of which 40, 000 were ethnic minorities, with Tibetans accounting for about 62% of the total population. The county has jurisdiction over 3 towns and 6 townships. Jianzha County has profound religious and cultural accumulation, which is the birthplace of Tibetan Buddhism. Kambra National Geopark is famous for its "Danxia" scenery composed of red gravel. There are three major monasteries in the park: Nanzong Temple, Nigu Temple and Nanzongza Temple. It is the only religious place in Qinghai Province where monks, secrets and nuns coexist.