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.
Guzhang County, which belongs to Xiangxi Tujia and Miao Autonomous Prefecture, is located in the west of Hunan Province and the middle of Xiangxi Autonomous Prefecture. Guyang Town is the seat of the county, which reaches Baojing in the west, Yuanling in the east, Jishou and Luxi in the south, and Yongshun in the north. With a total area of 1286 square kilometers, it has jurisdiction over seven townships and five towns, with a total population of 144100 (2016), of which ethnic minorities account for 76.9 per cent. Guzhang County has an excellent ecological environment, and the green rate of trees is as high as 80.46%. It is known as "the hometown of forestry, famous tea, weightlifting, singing and dancing". Guzhang County is the hometown of singers Song Zuying and he Jiguang, with unique characteristics such as Tujia Maogus, waving dance, Miao encouragement and so on. There are World Geological sites-Guzhang Golden Nail, National Geopark-Red Stone Forest, National Nature Reserve-