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.
Pulan County (English: Purang County) belongs to the Ali region of Tibet, China. It is located in the southwest of Tibet Autonomous region, the south of Ali region, the south side of the Himalayas and the junction of China, India and Nepal. It is located between longitude 80 °27 "- 82 °30" east and latitude 30 °00 "- 31 °13" north. Pulan County has a total area of 12539 square kilometers. The total population is 10,000 (2014). County people's government in Pulan town Jirang community. Pulan County has jurisdiction over 1 town and 2 townships: Pulan Town, Baga Township and Hall Township. There are 10 administrative villages (communities). By the end of 2014, the county's GDP had reached 70.6 million yuan, with a growth rate of more than 18% for three consecutive years. The fiscal revenue was 2.4 million yuan, compared with 20%.