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.
Shangluo City, a prefecture-level city in Shaanxi Province, is located in the southeast of Shaanxi Province, at the southern foot of Qinling Mountains, on the border with Hubei and Henan provinces. It borders Lingbao, Lushi, Xixia and Xichuan counties and cities in Henan Province in the east; Yunyang District and Yunxi County in Shiyan City in Hubei Province in the south; Hanbin District, Ningshan and Xunyang in Ankang City, Shaanxi Province, and Chang'an District and Lantian County in Xi'an City in the west and southwest; and Tongguan, Huayin and Huazhou District in Weinan City, Shaanxi Province in the north. It is between longitude 108o 3420 "- 111o 1x 25" east and latitude 33o 230m-34o 24040 "north. It is about 229km from east to west and 138km from north to south, with a total area of 19292 square kilometers, accounting for 9.36 per cent of the total area of Shaanxi Province. Shangluo got its name from Shangshan and Luoshui in the territory, which began in the Han Dynasty and refers to Shangfu.