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.
Kaiyuan City, Tieling City, Liaoning Province, under the jurisdiction of county-level cities, is located in the northeast of Liaoning Province, east of the middle reaches of Liao River, hilly area. As of 2014, Kaiyuan had jurisdiction over 3 streets, 11 towns and 6 townships. As of 2014, the total area of Kaiyuan City is 3164 square kilometers, and as of 2010, the total population of Kaiyuan City is 545600. Kaiyuan is an excellent tourist city in China and one of the birthplaces of Errenzhuan in Northeast China. With abundant rainfall and fertile land, Kaiyuan is a national key grain-producing area and commodity grain base. In 2011, Kaiyuan ranked 76th among the top 100 counties in the country, and ranked among the top 10 in the first national top 100 counties' satisfaction rating. "Ten reform and innovation demonstration counties and cities in China, ten most suitable counties and cities for entrepreneurship, ten counties and cities with the most core competitiveness" and "small and medium-sized cities in China"