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.
Baishui County is located in the northeast of Shaanxi Province, in the transition zone between Guanzhong Plain and Northern Shaanxi Plateau. It is the throat of Guanzhong and Northern Shaanxi. It is named after Baishui River. Baishui is the best eugenic area for apples in the world. Baishui Apple is famous all over the world. Baishui is also the largest organic apple production base in the country. Baishui County is located between longitude 109 °16 and latitude 35 °4, with a total area of 986.6 square kilometers, cultivated land of 720000 mu, seven towns and one office, with a total population of 300000 (2010). It is separated by Pucheng County in the south, Yintai District in Tongchuan City and Weibei Black Belt in the west, and bounded by Huanglong and Yanmen Mountains in the north, adjacent to Yijun, Huanglong and Luochuan County. 2018