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.
Xietongmen County, which belongs to Xigaze City, is located in the northwest of Xigaze City in Tibet Autonomous region and on the north bank of the Brahmaputra River. It is bordered by Nanmulin County and Sangzhuzi District of Xigaze City to the east, Shenza County of Naqu City to the north, Anren County to the west, and Sakya County and Lazi County to the south. Located in longitude 87 °4'to 89 °1, latitude 29 °18'to 30 °26, the county people's government is stationed in Kaga town. The county seat is 83 kilometers away from the people's Government of Xigaze City. As of 2014, Xietongmen County has jurisdiction over 1 town and 18 townships, with a total area of 13960 square kilometers. The total population is 47000 (2015). From January to May 2014, Xietongmen County completed 60.21 million yuan in tax revenue, accounting for 70.8 percent of the annual plan, with an increase of 28.38 million yuan, an increase of 89.2 percent over the same period last year. The first half year