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.
Songtao Miao Autonomous County (Songtao for short) is a county under the jurisdiction of Tongren City, Guizhou Province. Founded in 1956, it is one of the earliest autonomous counties approved by the State Council. Located at the eastern foot of Fanjing Mountain, the main peak of the Wuling Mountains, Songtao is located at the junction of Guizhou, Hunan and Chongqing provinces and cities, connected with Huayuan and Phoenix in Hunan, bordered with Youyang and Xiushan in Chongqing, with moderate location and convenient transportation, and is known as the "gateway to eastern Guizhou". In ancient times, there is the name of "connecting Sichuan and Chu, holding down Sanxiang". The county has jurisdiction over 5 streets, 17 towns and 6 townships. The total area is 3409 square kilometers, of which the built area is more than 24 square kilometers. Tongren is the largest county with the largest area, the largest population and the strongest comprehensive strength. In March 2019, it was selected into the list of the first batch of revolutionary cultural relics protection and utilization districts and counties.