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.
Zhenfeng County, which belongs to Qianxinan Prefecture, Guizhou Province, is located in the southwest of Guizhou Province, with Zhenning Buyi and Miao Autonomous County and Wangmo County in the east, Anlong County and Ceheng County in the south, Xingren County in the west and Guanling Buyi and Miao Autonomous County in the north. It has jurisdiction over 6 towns and 7 townships, with a total area of 1511 square kilometers and a population of 410000 (2012). Zhenfeng County was founded in the Tang Dynasty during the period of Zhenguan, there are Shuangrufeng and other scenic spots. In 2013, Zhenfeng County completed a GDP of 6.257 billion yuan, an increase of 16.9% over the same period in 2012. In March 2019, it was on the list of the first batch of revolutionary cultural relics protection and utilization districts and counties. In November 2019, Zhenfeng County was named as the national demonstration county of "Sihao Rural Road".