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.
Ceheng County, which belongs to the Buyi and Miao Autonomous Prefecture in southwest Guizhou Province, is located in the southwest of Guizhou Province. It is adjacent to Wangmo County in the east, Leye, Tianlin and Longlin in Guangxi to the south, Anlong County in the west and Zhenfeng County in the north, with a total area of 2598 square kilometers. The population is 230000 (2008). Ceheng County under the jurisdiction of 9 towns and 5 townships, there are Datian River Grand Canyon, Banqi hot springs and other scenic spots. In 2013, Ceheng County completed a GDP of 2.314 billion yuan, an increase of 17.6% over 2012. On September 25, 2018, he won the honorary title of "2018 e-commerce into rural comprehensive demonstration county" of the Ministry of Commerce. In March 2019, it was on the list of the first batch of revolutionary cultural relics protection and utilization districts and counties.