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.
Shenza County belongs to Naqu City, Tibet Autonomous region. "Shenza" in Tibetan means white, transparent and flawless refined salt ("Shen" is translated as white and transparent; "Zha" is translated as salt). In ancient times, it was called Nacang Deba. It is located in the south of the hinterland of the northern Tibetan plateau, between the Gangdise Mountains and the second largest lake Lincuo in northern Tibet, with a central location of 88 °38 °E and 30 °57 °N, bounded by the Nianqing Tanggula Mountains in the south, connected with Xigaze City in the south, Shuanghu County in the north, Bangor County in the east and Nima County in the west. It is 520 kilometers away from Lhasa, the capital of Tibet Autonomous region, and 505 kilometers away from Naqu City. In 2015, Shenza County had a total area of 25546 square kilometers; in 2015, it had a total population of 16400; it had jurisdiction over 2 towns and 6 townships; and in the first three quarters of 2015, Shenza County achieved a GDP of 354.