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.
Xinxing County, which belongs to Yunfu City, Guangdong Province, is located in the west-central part of Guangdong Province, southeast of Yunfu City, adjacent to the Pearl River Delta, 140km away from the provincial capital Guangzhou, with a total area of 1523 square kilometers. It is 100 kilometers away from the nearest point of the ocean and belongs to the subtropical monsoon climate zone. Xinxing County Sanmao Railway, S276, S113 lines run through the whole territory, in the "Pearl River Delta one-hour economic circle." The total mileage of county highway is 962.908 km. It has jurisdiction over 12 towns, 199 villages (communities) and 1077 natural villages in 2018. In 2016, there were 492700 registered residents and 450100 permanent residents, as well as more than 150000 overseas Chinese and compatriots from Hong Kong, Macao and Taiwan. It is one of the hometown of overseas Chinese in Guangdong Province and belongs to the Cantonese dialect area. Xinxing County is the industrial base of stainless steel products in China.