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.
Cangzhou, a prefecture-level city in Hebei Province, is located in the Heilonggang Basin in the southeast of Hebei Province and in the east of Hebei Plain, between latitude 37 °29-38 °57 north and longitude 115 °42-117 °50 'east. It is bordered by the Bohai Sea in the east, Tianjin and Langfang in the north, Baoding and Hengshui in the west and southwest, and Nangezhang Weixin River opposite Binzhou and Dezhou in Shandong Province. Cangzhou gets its name because of its proximity to the Bohai Sea, 120 kilometers north of Tianjin, 240 kilometers from Beijing and 220 kilometers southwest of Shijiazhuang, the provincial capital. Cangzhou has jurisdiction over 2 municipal districts, 4 county-level cities, 10 counties and Cangzhou Bohai New area, Cangzhou Economic Development Zone, Cangzhou High-tech Industrial Development Zone, with a total area of 14000 square kilometers. In 2018, Cangzhou achieved GDP 3.