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.
Heshan City, a county-level city under the jurisdiction of Guangxi Zhuang Autonomous region, is a new industrial and mining city hosted by Laibin City, which is located in the west, southeast and west of Laibin City and connected with Xingbin District. Heshan has convenient transportation, National Highway 322 Nanliu Secondary Highway runs through the north and south of the city, more than 50 kilometers east of Nanliu Expressway; the railway is connected with the Hunan-Guangxi railway trunk line; shipping can reach Guigang, Wuzhou, Guangzhou and Hong Kong and Macao. Heshan City was awarded the title of "Top Ten counties (cities) in Guangxi Economic Development" in 2003 and 2005, and entered the list of "100 counties and cities with the fastest improvement in the basic competitiveness of China's county economy" in 2004. In March 2009, Heshan was listed as one of the second batch of 32 resource-exhausted cities by the State Council. After the transformation, it has received strong support from government funds and projects at all levels.