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.
Zahang County, which belongs to Shannan City, Tibet Autonomous region, is located in south-central Tibet and the middle reaches of the Brahmaputra River. It is located between longitude 90 °03 / 90 °38 'east and latitude 28 °27 / 29 °34' north. It is bordered by Nadong and Qiongjie counties in the east, Gongga County in the west, Cuomei County and Langkazi County in the south, and Chengguan District and Dazi District in Lhasa City in the north. Zahang County covers an area of 2163 square kilometers. The area of cultivated land is about 67000 mu. As of 2010, the total population is 40,000. It has jurisdiction over 2 towns, 3 townships and 63 villages. The county people's government is stationed in Zatang town. Famous and special products include potatoes, jade pottery, Minzhu Lin Tibetan incense, Tibetan table cabinets, mural sculptures, bags, Jiru and so on. From 2006 to 2010, Zahang County achieved a cumulative GDP of 1.11 billion yuan, with an average annual growth rate of 15. 5%.