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.
Gaobeidian City is located in the middle of Hebei Province, southwest of Beijing, located in Beijing, Tianjin, Baoding triangle hinterland, around the capital Beijing-Tianjin economic circle, is an important industrial city in the south and north of Beijing. Gaobeidian City belongs to Baoding City. The total area of the city is 672 square kilometers. On April 9, 1993, Xincheng County was abolished and Gaobeidian City was established. The famous specialty products of Gaobeidian City include shredded tofu and famous figures such as Fan Yuqi. On January 25, 2019, he was selected as the national "Ping an Agricultural Machinery" demonstration county in 2018. In November 2019, he was selected into the list of the second batch of counties (districts) for the construction of a water-saving society.