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.
Xinxiang City is a prefecture-level city in Henan Province. Xinxiang City is located in the north of Henan Province, the center is located in 35 °18km north latitude, 113o 54km east longitude, facing the Yellow River to the south, facing Zhengzhou City and Kaifeng City across the river; Taihang City to the north, adjacent to Hebi City and Anyang City; Jiaozuo City to the west and Shanxi Province to the west; Puyang City to the east and Shandong City to the east, with a total area of 8249 square kilometers. Xinxiang City belongs to the North China plate, is located in the Yellow River and Haihe River basins, the terrain is high in the north and low in the south, the north is mainly Taihang Mountains and hills and hills, the south is the Yellow River alluvial fan plain, the plain accounts for 78% of the city's total land area, is a warm temperate continental climate, the average temperature over the years is 14 ℃, the average annual precipitation is 573.4 mm. In the early days of the founding of the people's Republic of China, Xinxiang was the capital of Pingyuan Province and the northern part of Henan Province.