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.
Changshun County belongs to Qiannan Buyi and Miao Autonomous Prefecture of Guizhou Province of the people's Republic of China. The county government is stationed in Changzhai Town, which is located in the south-central part of Guizhou Province and the west of Qiannan Prefecture. Changshun County has a total area of 1543 square kilometers. The county seat is 84 kilometers away from the provincial capital Guiyang, 178 kilometers from Duyun, the state capital, and 85 kilometers from Anshun City. Jurisdiction over 5 towns, 1 township, 1 street. The total population is 256600 (2015), with ethnic minorities accounting for 56% of the population, mainly Buyi and Miao. The mountains of Changshun County belong to the Miaoling mountain system, the north of the Miaoling watershed Henggen County, the topography is high in the north and low in the south, the geomorphology type is the hilly area in the north, the hilly area in the west, the middle and low karst mountains in the south, and the peak and cluster valley in the east. The rivers belong to the Yangtze River and the Pearl River. Industry has coal mining, chemical fertilizer, building materials, feed processing. Agriculture