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.
Jiangcheng District, located in the south of Yangjiang City, is one of the municipal districts of Yangjiang City, the resident of the municipal party committee and municipal government, and the political, economic, cultural, transportation and information center of Yangjiang City. It borders Yangxi County in the west, the eastern district of Yangyang in the east, Yangchun City in the north, the South China Sea in the south, the coastal low mountains and hills in the coastal hilly area, and faces the sea along the river. Belongs to the south subtropical marine climate, the average annual temperature is 22.5℃, the average annual precipitation is 2300 mm, the whole year is basically frost-free. The forest area is 15200 hectares, with a forest coverage rate of 19.2%. Jiangcheng is a dependency of Gaoliang County in ancient times. Since Wu Sunquan bought Gaoliang County in the first year of Wei and Huang Dynasty (AD 220) (except for the 58 years of Liu Song in the Southern Dynasty), it has been administered by counties, states and counties. In the second year of the great cause of the Sui Dynasty (AD 606), Yangjiang County was set up to transform the old Tucheng and the new brick and wood city after reconstruction.