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.
Lingshan County is a county under the jurisdiction of Qinzhou City, Guangxi, located in the south of Guangxi, northeast of Qinzhou City, bordering on Beibu Gulf, adjacent to Nanning and Beihai. It is the sub-center of Pan-Beibu Gulf Economic Zone and the deputy central city of Qinzhou. The county seat is more than 100 kilometers away from Nanning City, Qinzhou City, Beihai City, Fangchenggang City, Yulin City and Guigang City, forming an economic circle of one and a half hours with the six cities and 500 kilometers away from Guangzhou. It is the famous hometown of litchi, dairy buffalo, snake farming and famous tea in China. In addition, Lingshan County is also a famous hometown of fruit, aquatic products and fish and rice. Lingshan County is located on the bank of Qinzhou Bay in the south of Guangxi, located in the upper reaches of Qinjiang River, the northeast of Qinzhou, the coastal core industrial city of Guangxi Beibu Gulf Economic Zone, Hengxian County, Nanning City to the north, Hepu County, Beihai City to the south, and adjacent to the east.