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.
Jingyang County, which belongs to Xianyang City, Shaanxi Province, is located in the central part of Shaanxi Province, north of the Jinghe River, and the hinterland of "eight hundred miles of Qinchuan". It is the origin of the land of the people's Republic of China, the east is bordered by Sanyuan and Gaoling District, and the Weicheng District of Xianyang City is bordered by the Weicheng District of Xianyang City in the south. Jinghe River is opposite to Liquan County in the west, and to the north is adjacent to Beizhong Mountain, Chunhua and Sanyuan County, with a total area of 780 square kilometers. Jingyang is located in the north of the Jinghe River. In ancient times, Jingyang took the north of the water as the sun, hence its name, which was first seen in the Book of songs. Jingyang County is the place where biography of Liu Yi, one of the four major folklore in China, takes place, and many scholars, writers and poets have emerged successively, such as Wu Mi, Lei Lyriyan, Li Ruobing, Bai Sketch and so on. It is the strategic important place of the national new area "Xixian New area".