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.
Dingjie County belongs to Xigaze City, Tibet Autonomous region, located in southern Tibet, southern Xigaze City, the northern foot of the Himalayas, is one of the border counties of the Tibet Autonomous region. The area is 5461 square kilometers. Knot means "growing under the water" in Tibetan. Subordinate to Xigaze City, the county government is stationed in Jiangga. Dingjie County is located in the lake basin area at the northern foot of the Himalayas, with high terrain in the north and south and low in the middle. The climate is the plateau temperate semi-arid monsoon climate. In 2013, the total population of Dingjie County was 16000. In 2005, Dingjie County achieved a gross domestic product (GDP) of 83.85 million yuan, of which the added value of the primary industry was 34.66 million yuan, the secondary industry was 28.16 million yuan, and the tertiary industry was 45.51 million yuan. The per capita GDP is 6021.68 yuan. October 2018, Tibet