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.
Qindu District, which belongs to Xianyang City, Shaanxi Province, is located in the hinterland of Guanzhong Plain and the western half of Xianyang City. The surrounding area is bordered by Xi'an, Chang'an District, Fengyi District, Xingping City, Liquan County and Weicheng District, between 108 °37mm east longitude 108 °45km and 34 °18km north latitude 34 °26'. The region is 28.5 kilometers long from north to south and 21 kilometers from east to west, with a total area of 259 square kilometers. Qindu District, named after the establishment of the capital here by the Qin Dynasty, China's first multi-ethnic feudal dynasty, was once the heart of China. The ancient Silk Road took the capital of Qin as the first post station, and the new Eurasian Continental Bridge still used the capital of Qin as an important transportation hub. In 2018, Qindu District had jurisdiction over 12 streets with a resident population of 351000, achieving a GDP of 382. 5%.