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.
Sangzhuzi District: formerly known as Xigaze, also known as Nianmai, Sangzhuzi is now a municipal district under the jurisdiction of Xigaze City of Tibet Autonomous region, covering an area of 3700 square kilometers. Xigaze City is the second largest city in Tibet and a national historical and cultural city. Sangzhuzi District is located in the south of Tibet Autonomous region and the east of Xigaze region. Geography: in the northern foothills of the Himalayas, the Brahmaputra River runs from east to west, meandering 145 kilometers, and the Nianchu River converges with it. The climate is relatively mild, with obvious monsoon and arid plateau climate characteristics. The average annual temperature is 6.3mm ℃ and the annual precipitation is 400mm. History: during the Sakya dynasty in the eleventh century, there was an embryonic form of a small town. It has been more than 600 years since the founding of the city: Jiangqu Jianzan, the Great Szeto of Emperor Yuanshun, established the Palzhu Dynasty, with thirteen major ones, and the last one was called Sangzhu.