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.
Qinshui County, which belongs to Jincheng City, Shanxi Province, is located in the southeast of Shanxi Province, northeast of Zhongtiao Mountain and the middle reaches of Qinhe River. The junction of Taihang, Taiyue and Zhongtiao mountain systems. The county is surrounded by mountains, east to Laomaling, and Yueshen Mountain to Gaoping City and Zezhou County; to the west to Dongwuling and Yicheng County; to the south to Xianweng Mountain and Shunwangping to Yangcheng and Yuanqu County; to the north to Xiangshanling, Guandiling and Yujun Mountain adjacent to Fushan, Anze and Changzi County. It is between 35 °24 degrees north latitude and 36 °04 degrees north longitude and 115 °55 degrees east longitude, with a total area of 2676.6 square kilometers. Qinshui has a long history. Since ancient times, there have been legends of Nu Kui mending the sky and Shun ploughing through the mountains. The Xiachuan site excavated in the 1970s proves that as early as 23000 to 16000 years ago, the people of Qinshui