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.
Ningyang County, which belongs to Taian City, Shandong Province, is located in the west of central Shandong Province and in the south of Taian City, between longitude 116o36'- 117o38' east and latitude 35 °40mm / m 35 °37', with a total area of 1125 square kilometers. Ningyang County has a long history. In the Western Han Dynasty, Gaozu of the Han Dynasty bought the county to the south of Ningshan (now south of Fushan Village). Because the south of the mountain is Yang, it is named Ningyang. The territory is high in the east and low in the west, with low mountains and hills in the east and plains in the west. The main geomorphological types in Ningyang County are low mountains, hills, plains and water surfaces. Ningyang County is a warm temperate humid seasonal climate zone with four distinct seasons. In 2018, Ningyang County had jurisdiction over 2 streets, 10 towns and 1 township, with a resident population of 773800, achieving a GDP of 44.36 billion yuan, of which