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.
Huaiyuan County belongs to Bengbu City, Anhui Province. It is located in the north of Anhui Province, the middle reaches of the Huaihe River, the southern end of the Huaibei Plain, Guzhen, Bengbu and Fengyang to the east, Huainan to the south, Fengtai and Mengcheng to the west, and Hanxi and Suzhou to the north. It is between 116o 45km east longitude 11709' and 32o 43km north latitude 33 °19', with a total area of 2391.02 square kilometers. Huaiyuan County was founded from the Yuan Dynasty to the 28th year of the Yuan Dynasty (1291), known as the "Pearl on the Huaihe River" reputation, popular folk flower drum lanterns, places of interest are Bailuquan, Bian Hedong, Wanghe Tower and so on. In August 2018, the Anhui provincial government approved Huaiyuan County to withdraw from the poverty-stricken county. In 2018, Huaiyuan County has jurisdiction over 15 towns and 3 townships, with 1 farm and 2 development zones, achieving a GDP of 319. 5%.