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.
Queshan County is located in the south of Henan Province, on the north bank of the Huaihe River, west of Tongbai and Funiu Mountains, overlooking the Huang-Huai Plain to the east, between Zhengzhou and Wuhan, known as "the hinterland of the Central Plains and the throat of Henan and Hubei". Queshan County belongs to Zhumadian City, named after Queshan, six miles southeast of the county seat. As of 2010, Queshan County has jurisdiction over 10 towns and 2 townships. Queshan County is a warm temperate continental monsoon climate, the county has machinery, chemical, mining-based industrial production system; rich in mineral resources, is the largest building materials production base in southern Henan. Reconfirm the national health county (township) in 2018. In November 2019, it was selected into the second batch of counties (districts) for the construction of a water-saving society.