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.
Chuzhou, for short, is called Tuzhong, Qingliu and Xinchang in ancient times. It is the municipality of Anhui province, the city of Nanjing metropolitan area, the core city of Hefei metropolitan area, the member city of Yangtze River Delta urban agglomeration, the Jiangbei gate of Nanjing, the northern wing city of national Wanjiang demonstration zone, the central city of eastern Anhui, and the important hub city of Jianghuai region. Chuzhou is located on the north bank of the lower reaches of the Yangtze River, the western end of the Yangtze River Delta, the eastern part of Anhui Province, and the confluence area of Jiangsu and Anhui. The city has 2 districts, 4 counties under jurisdiction and 2 county-level cities in escrow, with a total land area of 13398 square kilometers and a resident population of 4.03 million. Chuzhou was the land of Tangyi as early as the pre-Qin period (now Nanjing.