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.
Pucheng County (ancient Pucheng County, Jianning Prefecture) is a county under the jurisdiction of Nanping City, Fujian Province, the hometown of Dangui in China. Located at the northernmost tip of Fujian Province and the junction of Fujian, Zhejiang and Jiangxi provinces, it is the "north gate" of Fujian. It has been the first pass for the Central Plains to enter Fujian since ancient times, bordering Jiangshan City, Longquan City, Suichang County in Zhejiang Province and Guangfeng County in Jiangxi Province respectively. It is adjacent to Jianyang City, Wuyishan City and Songxi County in Fujian Province. The county has jurisdiction over 2 streets, 9 towns, 8 townships and 296 villages. At the end of 2006, the registered population was 407000, of which 71600 were non-agricultural. Except for Shibei Town, Shuibei Street Town and other villages and towns, the dialect of northern Fujian is spoken in most of the other areas. The county covers an area of 3383 square kilometers, which is the third largest county in Fujian Province, with a mountain area of 4.374 million mu and cultivated land area.