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.
Shangri-La (Shangri-la), which means "Sun and Moon in the Heart" in Tibetan, is the prefecture-level administrative capital of Diqing Tibetan Autonomous Prefecture in Yunnan Province. It is located in the northwest of Yunnan Province and the hinterland of Hengduan Mountain area on the Qinghai-Tibet Plateau. It is also the junction of Yunnan, Sichuan and Tibet provinces and regions. It is also the site of the World Natural Heritage site of "three parallel Rivers". As of 2014, Shangri-La has a total area of 11613 square kilometers and has jurisdiction over 4 towns, 7 townships, 6 communities and 58 administrative villages. At the end of 2011, the total population of Shangri-La was 174585. In addition to the main Tibetan nationality, there are more than a dozen ethnic groups such as Han, Naxi, Yi and Bai, with a population density of 10 people per square kilometer. it is one of the cities with the largest area and the lowest population density in Yunnan Province. In 2011, Shangri-La