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.
Yuanyang County is located in Xinxiang City, Henan Province, which is located in the northern plain of Henan Province, facing the Yellow River to the south and Yuhe Channel to the north, with high topography in the southwest and low in the northeast. The geomorphology belongs to the Yellow River alluvial plain. Its geographical coordinates are 113.36-114.15 degrees east longitude and 34.55-35.11 degrees north latitude. It is surrounded by Fengqiu in the east, Wuchuan and Huojia in the west, Xinxiang and Yanjin in the back, and facing Zhongmou and Zhengzhou suburbs in the south. It has a long history, splendid culture and Wuhua Tianbao. the greatness of a man lends glory to a place. The county has jurisdiction over 4 towns, 8 townships and 2 offices (its Central Plains Wu Town, Qiaobei Township, Zhulou Township and Longyuan subdistrict offices entrust Xinxiang Plain New District Management Committee to manage), with a total population of 620000 (2016) and a total area of 1022 square kilometers. Yuanyang, known as Bolangsha in ancient times, is famous for Zhang Liang's stabbing of Qin here. Since Qin